Solving Proportions Review

Front

What is a proportion?

Back

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

Front

How do you determine if two ratios are proportional?

Back

Two ratios are proportional if their cross products are equal.

Front

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

Back

The cross product is ad and bc; if ad = bc, then the ratios are proportional.

Front

Solve the proportion: 3/4 = x/12

Back

x = 9.

Front

What is the first step in solving a proportion?

Back

The first step is to cross-multiply the ratios.

Front

If 5/x = 15/3, what is the value of x?

Back

x = 1.

Front

What does it mean if two ratios are not proportional?

Back

It means that their cross products are not equal.

Front

Solve for n in the proportion: 7/n = 14/2

Back

n = 1.

Front

What is the formula for finding a missing value in a proportion?

Back

If a/b = c/d, then ad = bc.

Front

How can drawing a diagram help in solving proportions?

Back

A diagram can visually represent the relationships between the quantities, making it easier to understand the problem.