# How do you know if the pair 6/9 and 2/3 form a proportion?

##### 2 Answers

They are proportions, see explanation.

#### Explanation:

First, set them both equal to each other.

#6/9 = 2/3#

Then, cross multiply. Follow this method:

#6(3) = 9(2)#

#18 = 18#

Another way to look at is to set both fractions equal and see what happened to one fraction to get to the other.

#2/3 = 6/9#

#(2times3)/(3times3) = 6/9#

#6/9 = 6/9#

We found that you can multiply

See explanation

#### Explanation:

To investigate if

Using the property of ratios

Divide top and bottom by 3 giving

Thus it is true that