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Finding the Fourth Proportional to 8,940.29, 12,337.92 and 5,402.81

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Solution

The fourth proportional to 8,940.29, 12,337.92 and 5,402.81 is: 7,456.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,940.29 : 12,337.92 = 5,402.81 : x
  2. Step 2: Convert to fraction form
    8,940.29/12,337.92 = 5,402.81/x
  3. Step 3: Cross multiply
    8,940.29x = 12,337.92 × 5,402.81
  4. Step 4: Simplify right side
    8,940.29x = 66,659,375.87
  5. Step 5: Solve for x
    x = 66,659,375.87/8,940.29
  6. Step 6: Final answer
    x = 7,456.07

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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.