SOLUTION: solve each proportion then find another equlivent ratio x over 15 is equal to 12 over 90

Question 1133139: solve each proportion then find another equlivent ratio x over 15 is equal to 12 over 90

Found 2 solutions by josgarithmetic, greenestamps:
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!

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ALTERNATIVE

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Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!

I'm sure the other tutor knows how to solve this kind of problem; however, they showed you two alternative methods for solving a DIFFERENT problem.

Of course the correct setup for solving the problem (or rather one possible correct setup) is

From there, there are many ways to find the solution.

you could "cross multiply" and do the arithmetic; or
you could simplify the fraction on the right (which in this case gives you the exact final answer); or
you could see that 90 is 6 times 15, which means 12 is 6 times x, making it easy to determine the value of x.
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