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Finding the Fourth Proportional to 3,882.64, 5,824.88 and 1,691.76

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Solution

The fourth proportional to 3,882.64, 5,824.88 and 1,691.76 is: 2,538.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,882.64 : 5,824.88 = 1,691.76 : x
  2. Step 2: Convert to fraction form
    3,882.64/5,824.88 = 1,691.76/x
  3. Step 3: Cross multiply
    3,882.64x = 5,824.88 × 1,691.76
  4. Step 4: Simplify right side
    3,882.64x = 9,854,298.99
  5. Step 5: Solve for x
    x = 9,854,298.99/3,882.64
  6. Step 6: Final answer
    x = 2,538.04

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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.