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Finding the Fourth Proportional to 8,818.92, 13,231.80 and 3,892.32

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Solution

The fourth proportional to 8,818.92, 13,231.80 and 3,892.32 is: 5,839.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,818.92 : 13,231.80 = 3,892.32 : x
  2. Step 2: Convert to fraction form
    8,818.92/13,231.80 = 3,892.32/x
  3. Step 3: Cross multiply
    8,818.92x = 13,231.80 × 3,892.32
  4. Step 4: Simplify right side
    8,818.92x = 51,502,399.78
  5. Step 5: Solve for x
    x = 51,502,399.78/8,818.92
  6. Step 6: Final answer
    x = 5,839.99

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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.