Proportions

Front

What is a proportion?

Back

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

Front

How do you solve for x in a proportion?

Back

To solve for x in a proportion, cross-multiply the terms and then isolate x.

Front

If a/b = c/d, what is the cross-multiplication method?

Back

The cross-multiplication method states that a*d = b*c.

Front

What is the first step in solving a proportion?

Back

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

Front

What does it mean if two ratios are equivalent?

Back

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

Front

Solve for x: 4/x = 2/8

Back

x = 16.

Front

Solve for x: 3/x = 6/12

Back

x = 6.

Front

Solve for x: x/5 = 10/2

Back

x = 25.

Front

Solve for x: 7/x = 14/28

Back

x = 14.

Front

What is the relationship between proportions and fractions?

Back

Proportions are a type of equation that compares two fractions.