Proportions

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What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

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How do you solve a proportion?

Back

To solve a proportion, cross-multiply the terms and then solve for the unknown variable.

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What does it mean if two ratios are equivalent?

Back

If two ratios are equivalent, it means they represent the same relationship between quantities.

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What is the cross-multiplication method?

Back

The cross-multiplication method involves multiplying the numerator of one ratio by the denominator of the other ratio.

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Back

Front

Back

The proportion is true.

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Back

n = 48.

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Back

n = 48.

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Back

y = 21.

Front

What is the first step in solving a proportion?

Back

The first step is to set the two ratios equal to each other.