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

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) (Show Source): You can put this solution on YOUR website!

Start with the given equation.

Multiply both sides by s

Multiply both sides by 91

Multiply

Divide both sides by 52

Reduce.

So our answer is which in decimal form is
Answer by stanbon(75887) (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?
-------------------------------------
Invert both sides, as you have done: then solve for "s":
91/52 = s/42
----
Multiply both sides by 42 to get:
s = 42(91/52)
s = 73.5
================
Cheers,
Stan H.

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