SOLUTION: could someone please show me how to solve these 2 problems : The problem states,Solve for the unknown (X) in the following proportions: 1) 2/10 = 16/x x = 2) 7/30 = x/90

Question 181287: could someone please show me how to solve these 2 problems :
The problem states,Solve for the unknown (X) in the following proportions:
1) 2/10 = 16/x x =
2) 7/30 = x/90 x =

Thank you so much in advance
Found 2 solutions by Alan3354, Mathtut:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
The problem states,Solve for the unknown (X) in the following proportions:
1) 2/10 = 16/x
The easiest way is to "cross multiply." Multiply the NUM of one by the DEN of the other.
2x = 160
x = 80
-----------
2) 7/30 = x/90
30x = 630
x = 21
----------
Answer by Mathtut(3670) (Show Source): You can put this solution on YOUR website!
1)
:
cross multiply which means the number in the denominator of one fraction is multiplied by the number in the numerator of the other fraction. This is done form BOTH fractions and those are equal to each other. You then solve for the unknown
:
10(16)=2(x)
:
2x=160
:

:
2)
:
30(x)=90(7)
:
30x=630
:

RELATED QUESTIONS
Could someone show me how to put these problems on paper not just the answers because... (answered by solver91311)
Solve for the unknown in each of the following proportions.0.5/a=1.25/5 Could someone... (answered by ewatrrr)
I am having problems solving these types of questions could someone please show me how to (answered by nycsharkman)
I am having a problems with these two problems and wondering if there was someone that... (answered by stanbon)
Could someone please help me Solve for the unknown in each of the following... (answered by Fombitz)
Hello. Could someone please show me what the steps are to solve these problems ? Solve (answered by mananth)
Solve for the unknown in each of the following proportions. 7/12=m/24 Can someone... (answered by ewatrrr)
How do I solve these problems? The problem states to: find the product and... (answered by stanbon)
Could someone please show me how to solve its expression??? Solve by completing the... (answered by Earlsdon)