# How do you use cross products to solve #2/9=c/27#?

##### 3 Answers

Apr 16, 2018

Just arrange the equation

#### Explanation:

Apr 16, 2018

c = 6

#### Explanation:

First we need to cross multiply.

Which gives us...

To make the next step easy, we will flip the equation

Now we can find the value of c

Apr 16, 2018

#### Explanation:

#"given equal fractions then we can solve using "color(blue)"cross-products"#

#"that is "a/b=c/drArrbc=adlarrcolor(blue)"cross-products"#

#"applying this to "2/9=c/27" gives"#

#9c=2xx27#

#rArr9c=54#

#"divide both sides by 9"#

#(cancel(9) c)/cancel(9)=54/9#

#rArrc=6#