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Finding the Fourth Proportional to 3,468.38, 5,202.18 and 871.31

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Solution

The fourth proportional to 3,468.38, 5,202.18 and 871.31 is: 1,306.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,468.38 : 5,202.18 = 871.31 : x
  2. Step 2: Convert to fraction form
    3,468.38/5,202.18 = 871.31/x
  3. Step 3: Cross multiply
    3,468.38x = 5,202.18 × 871.31
  4. Step 4: Simplify right side
    3,468.38x = 4,532,724.46
  5. Step 5: Solve for x
    x = 4,532,724.46/3,468.38
  6. Step 6: Final answer
    x = 1,306.87

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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.