Solving Proportions

Front

What is a proportion?

Back

When two ratios are equivalent and show the same value.

Front

Which ratio is proportional to the ratio 5/6?

Back

25/30

Front

Which ratio is proportional to the ratio 1/5?

Back

2/10

Front

Do the ratios 3/4 and 6/8 form a proportion?

Back

Yes, they form a proportion.

Front

Do the ratios 2/3 and 4/5 form a proportion?

Back

No, they do not form a proportion.

Front

Solve for x: 5/x = 10/20

Back

x = 2

Front

If 4/5 = x/25, what is x?

Back

x = 20

Front

What is the cross product of the ratios 2/3 and 4/5?

Back

8 (2*4) and 12 (3*4) do not equal, so they do not form a proportion.

Front

If a/b = c/d, what is the relationship between a, b, c, and d?

Back

The cross products a*d = b*c are equal.

Front

What is the first step in solving a proportion?

Back

Set the two ratios equal to each other.