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Finding the Fourth Proportional to 8,713.60, 13,077.12 and 3,523.20

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Solution

The fourth proportional to 8,713.60, 13,077.12 and 3,523.20 is: 5,287.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,713.60 : 13,077.12 = 3,523.20 : x
  2. Step 2: Convert to fraction form
    8,713.60/13,077.12 = 3,523.20/x
  3. Step 3: Cross multiply
    8,713.60x = 13,077.12 × 3,523.20
  4. Step 4: Simplify right side
    8,713.60x = 46,073,309.18
  5. Step 5: Solve for x
    x = 46,073,309.18/8,713.60
  6. Step 6: Final answer
    x = 5,287.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.