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there are a few ways. let's look at 1/2 or the ratio 1 to 2 ( sometime written as 1:2) and compare it to 2 to 4 which I will write as 2/4 So one way is to multiply the bottom number on the first by the top number on the second. 2x2=4 and do the same with the remaining two numbers, 1x4=4 so they are the same and that means the ratios are the same. They used to call this multiplying the means and the extremes. In general a/b is equivalent to c/d if bc=ad. The other way is to put them both in lowest terms and compare. So 2/4 is 1/2 by dividing the numerator and denominator by 2.
Wiki User
∙ 8y ago
Wiki User
∙ 9y agoThe ratios are equal if and only if their cross products are equal.
That is a/b = c/d iff ad = bc
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How do you determine if the quantities in a pair of ratios are equivalent?
If the cross-product are equal the ratios are equal. Thus, a/b = c/d if (and only if) ad = bc
How would you determine if ratios are equivalent in 15 computers for 45 students or 45 m for 135 seconds?
Compare the simplified ratios, which are 1 : 3.
What are equivlent ratios?
when a number of ratios give the same answer after solving the ratios the ratios are said to be equivalent ratios
Two ratios that are equivalent are said to be in what?
Two ratios that are equivalent are said to be in proportion
How to explain making equivalent ratios?
Equivalent ratios are ratios that represent different numbers but the relationship between the numbers is same.
How do you determine if the quantities in a pair of ratios are equivalent?
If the cross-product are equal the ratios are equal. Thus, a/b = c/d if (and only if) ad = bc
How would you determine if ratios are equivalent in 15 computers for 45 students or 45 m for 135 seconds?
Compare the simplified ratios, which are 1 : 3.
What are the ratios that name the same comparison?
equivalent ratios are different ratios that name the same comparison
What are ratios that have same value?
Equivalent ratios.
What are ratios that are equal?
They are called equivalent ratios.
What is two ratios that are equivalent?
Two ratios are the equivalent when their simplified forms are identical.
Two ratios that are equivalent are said to be in what?
Two ratios that are equivalent are said to be in proportion
What are equivlent ratios?
when a number of ratios give the same answer after solving the ratios the ratios are said to be equivalent ratios
How to explain making equivalent ratios?
Equivalent ratios are ratios that represent different numbers but the relationship between the numbers is same.
How do you determine if more than two ratios are equivalent or not?
Cross-multiply them in pairs. The ratios are the same if and only if the answers are the same. Thus a/b = c/d iff a*d = b*c.
What is the equivalent ratios of 3 and four?
The equivalent ratios of 3 and 4 are 6:8, 9:12, and 15:20.
What it means when two ratios are equal?
They are equivalent ratios
