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Finding the Fourth Proportional to 3,892.28, 5,835.57 and 2,655.81

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Solution

The fourth proportional to 3,892.28, 5,835.57 and 2,655.81 is: 3,981.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,892.28 : 5,835.57 = 2,655.81 : x
  2. Step 2: Convert to fraction form
    3,892.28/5,835.57 = 2,655.81/x
  3. Step 3: Cross multiply
    3,892.28x = 5,835.57 × 2,655.81
  4. Step 4: Simplify right side
    3,892.28x = 15,498,165.16
  5. Step 5: Solve for x
    x = 15,498,165.16/3,892.28
  6. Step 6: Final answer
    x = 3,981.78

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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.