IXL | Do the ratios form a proportion? | 7th grade math

or

Do the ratios

2

1

and

20

10

form a proportion?

yes

no

ref_doc_title.

or

Learn with an example

question

Do the ratios

14

7

and

2

1

form a proportion?

yes

no

key idea

Two equivalent ratios form a proportion.

Equivalent ratios have the same value.

solution

To determine whether the two ratios

14

7

and

2

1

form a proportion, you can compare them using a common denominator.

The denominators are 7 and 1. You can use 7 as the common denominator since 7 is a multiple of 1.

Write

2

1

with a denominator of 7.

2

1

=

2

7

1

7

=

14

7

So,

14

7

and

2

1

are equal.

This means that the ratios

14

7

and

2

1

form a

proportion.

Looking for more? Try these:

Lesson: Proportions

or

$Confetti$

Excellent!

Now entering the Challenge Zone—are you ready?

Teacher tools

Work it out

Not feeling ready yet? These can help:

F.5Least common denominator

L.1Understanding ratios

Lesson: Proportions