0
Proportions: Our example: 4/x = 7/9
First, find which fraction is missing a number/is replaced with a variable. In this case, it is the first one: 4/x. Next, cross multiply. You multiply the number shown in the variable fraction by the opposite number in the other fractions. So you would multiply 4x9, because one is a numerator and the other is a denominator. Once you get that number, divide it by the other number not used, which would be 7. 36 divided by 7 is 5.142857>. That means x=5.142857. Ratios: Ratios are any equations that compare numbers, like fractions or proportions. They can be written in proportion form: 4/5=7/8, or fraction form: 9/20.
Wiki User
∙ 7y ago
Add your answer:
Earn +20 pts
How do you solve a proportion if a variable is missing?
You can look at the ratio that is given to you for example in geometry... It is used to compare two ratios or make equivalent fractions. Use the ratio and make that the denominator of the proportion and cross multiply.A proportion will help you solve problems like the one below. Jane has a box of apples and oranges in the ratio of 2:3. If she has six apples, how many oranges does she have?Before we begin to set up proportions for a word problem, we will concentrate on solving proportions. Remember, a proportion is a comparison between two ratios. The proportion shown below compares two ratios which are in the fraction form. 1 x - = - 2 6
How do you name the cross products of proportions?
They are other proportions.
Why do we use Z and Q to represent integers?
We use Q for Rationals... which is repreentative of Quocentia (Quotient), since rationals are RATIOs or fractions.
When two ratios are equal what are they called?
They are called equivalent ratios.
Why are all aspect ratios identified as something to 1 or perhaps even recorded as a decimal value?
It allows the ratios to be compared more easily. But they are NOT all defined as unit ratios. My monitor has an aspect ratios of 4:3 or 16:9.
How are maps and scale drawings related to ratios and proportions?
You need ratios to find out what scale to use.
What do aeronautical engineers use ratios and proportions for?
I'm sure they use ratios and proportions at many different points in the practice of their profession. One obvious application is in construction of exact scale models of aircraft and their components for wind-tunnel tests.
What is two equal ratios?
PROPORTIONS
How you use math when making guacamole?
You use ratios or proportions for making sure you use the correct amount of each ingredient.
How can you make a sentence with as ratios?
Ratios are very important part of mathematics. They teach us how to deal with proportions.
What do percent proportion?
Ratios or fractions can be used to present proportions.
How is math used to help an administrative assistant?
The assistant can use ratios and proportions to calculate how much more their boss makes then them.
What are the release dates for Assignment Discovery - 1992 Concepts in Algebra Ratios and Proportions?
Assignment Discovery - 1992 Concepts in Algebra Ratios and Proportions was released on: USA: 13 February 2006
Is there a statistical test to assess the difference between two ratios. I have numbers which are ratios and want to test whether there is a statistical difference between them?
You can use the z test for two proportions. The link below will do this test for you.
When evaluating proportions we write the ratios in fractional form and then we?
Move on to the next task.
What kind of math do you use in chemistry?
ratios and proportions units, dimensions, and conversions logarithms arithmetic mean, error, percent error, and percent deviation just to name a few
What type of career uses ratios and proportions?
Well, I know one career that uses proportions. Being a baker, for example scaling a recipe up and down depending on the number of guests you have.
