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Finding the Fourth Proportional to 9,165.92, 12,648.96 and 4,974.20

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Solution

The fourth proportional to 9,165.92, 12,648.96 and 4,974.20 is: 6,864.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,165.92 : 12,648.96 = 4,974.20 : x
  2. Step 2: Convert to fraction form
    9,165.92/12,648.96 = 4,974.20/x
  3. Step 3: Cross multiply
    9,165.92x = 12,648.96 × 4,974.20
  4. Step 4: Simplify right side
    9,165.92x = 62,918,456.83
  5. Step 5: Solve for x
    x = 62,918,456.83/9,165.92
  6. Step 6: Final answer
    x = 6,864.39

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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.