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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

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Q: How do you solve a proportion if a variable is missing?
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Related questions

How do you solve a proportion if two variables are missing?

Calculus.


How do you solve for missing sides in similar figures?

set up a proportion. cross multiply. solve


How do you work out proportions?

to solve a proportion you have to set up a problem Ike this...24/65 = 12/x you fill in the missing variable with a letter.most common is x.the missing variable is the variable you are trying to solve for.now you do 24x/24 = 780/24 you do 24x and put 24 under it.now do 65 times 12which is 780.so you put 780 as the other fraction.now do 780 divided by 24 which is 325.so 325 is325 is the answer.That's how you solve proportions.


What is variable proportion?

When I say number, I am also including variables and variables with a coefficient (terms). You Have to Cross-Multiply, and then solve algebraicall


How do you convert 5000 micrometers to meters?

(value in micrometers) = (value in meters) x 1,000,000. Then solve for the missing variable.


How do you solve the proportion of something?

There cannot be a "proportion of something": proportion is a relationship between two things, and how you solve it depends on whether they (or their transformations) are in direct proportion or inverse proportion.


What is Definition of law of variable proportion?

The law of variable proportion is basically a study of production functions. The factors used include fixed and variable factors.


How do you find the missing variable in corresponding angles?

The answer depends on which variable is missing.


Can you solve for a variable in an equation?

Sure. You can always 'solve for' a variable, and if it happens to be the only variable in the equation, than that's how you solve the equation.


Is a proportion an example of a continuous variable?

No


How do you explain the law of variable proportion?

Explain the Law of Variable Propotion


Relationship between manipulated variable and responding variable?

direct proportion