Proportions and Solving Proportions

Front

What is a proportion?

Back

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

Front

What does it mean for two ratios to be proportional?

Back

Two ratios are proportional if they represent the same relationship or if their cross products are equal.

Front

How do you determine if two ratios are proportional?

Back

You can determine if two ratios are proportional by cross-multiplying and checking if the products are equal.

Front

What is the cross product of the ratios a/b and c/d?

Back

The cross product is a*d and b*c.

Front

If 1/5 = x/10, what is the value of x?

Back

x = 2.

Front

Which of the following ratios is proportional to 3/4? 6/8, 2/3, 4/5, 1/2

Back

6/8.

Front

What is the solution to the proportion 2/3 = x/9?

Back

x = 6.

Front

If 5/10 = x/20, what is the value of x?

Back

x = 10.

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division.

Front

What is an example of a proportion?

Back

1/2 = 2/4 is an example of a proportion.