3 is to 9 as 16 is to what?

Find 9 and 3's GCF, 3. Multiply 16 by 3 = 48.

So your anser is, 3 is to 9 as 16 is to 48.

3:9 =16:x

x =9/3 x 16

x=3 x 16

x = 48