Solving Proportion Equations

Front

Define a proportion.

Back

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

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What is the cross-multiplication method in solving proportions?

Back

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

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Back

n = 21.5

Front

Back

n = -3.25

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Back

x = 7

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Back

x = 26

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Back

m = -12

Front

What is the first step in solving a proportion?

Back

The first step is to cross-multiply the two ratios.

Front

What does it mean if two ratios are in proportion?

Back

It means that the two ratios express the same relationship between their respective quantities.

Front

How can you check if your solution to a proportion is correct?

Back

You can substitute your solution back into the original proportion to see if both sides are equal.