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Finding the Fourth Proportional to 8,343.92, 12,520.13 and 3,961.42

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Solution

The fourth proportional to 8,343.92, 12,520.13 and 3,961.42 is: 5,944.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,343.92 : 12,520.13 = 3,961.42 : x
  2. Step 2: Convert to fraction form
    8,343.92/12,520.13 = 3,961.42/x
  3. Step 3: Cross multiply
    8,343.92x = 12,520.13 × 3,961.42
  4. Step 4: Simplify right side
    8,343.92x = 49,597,493.38
  5. Step 5: Solve for x
    x = 49,597,493.38/8,343.92
  6. Step 6: Final answer
    x = 5,944.15

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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.