SOLUTION: In the Dicovering Algebra: An Investigative approach, there is a question that says Find the value of the unknown number in each proportion? The problem is 52/91=42/s. So do i inve

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Question 222784: In the Dicovering Algebra: An Investigative approach, there is a question that says Find the value of the unknown number in each proportion? The problem is 52/91=42/s. So do i inverse it. Swich it up like this: 91/52=s/42? or keep it the same?
Found 2 solutions by jim_thompson5910, stanbon:
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

52%2F91=42%2Fs Start with the given equation.


%2852%2F91%29%2As=42 Multiply both sides by s


52%2As=42%2A91 Multiply both sides by 91


52%2As=3822 Multiply


s=3822%2F52 Divide both sides by 52


s=147%2F2 Reduce.


So our answer is s=147%2F2 which in decimal form is s=73.5

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The problem is 52/91=42/s. So do i inverse it. Switch it up like this: 91/52=s/42? or keep it the same?
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Invert both sides, as you have done: then solve for "s":
91/52 = s/42
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Multiply both sides by 42 to get:
s = 42(91/52)
s = 73.5
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Cheers,
Stan H.