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Finding the Fourth Proportional to 8,662.38, 11,947.95 and 8,532.78

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Solution

The fourth proportional to 8,662.38, 11,947.95 and 8,532.78 is: 11,769.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,662.38 : 11,947.95 = 8,532.78 : x
  2. Step 2: Convert to fraction form
    8,662.38/11,947.95 = 8,532.78/x
  3. Step 3: Cross multiply
    8,662.38x = 11,947.95 × 8,532.78
  4. Step 4: Simplify right side
    8,662.38x = 101,949,228.80
  5. Step 5: Solve for x
    x = 101,949,228.80/8,662.38
  6. Step 6: Final answer
    x = 11,769.19

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.