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Finding the Fourth Proportional to 3,951.52, 5,913.32 and 2,909.08

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Solution

The fourth proportional to 3,951.52, 5,913.32 and 2,909.08 is: 4,353.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,951.52 : 5,913.32 = 2,909.08 : x
  2. Step 2: Convert to fraction form
    3,951.52/5,913.32 = 2,909.08/x
  3. Step 3: Cross multiply
    3,951.52x = 5,913.32 × 2,909.08
  4. Step 4: Simplify right side
    3,951.52x = 17,202,320.95
  5. Step 5: Solve for x
    x = 17,202,320.95/3,951.52
  6. Step 6: Final answer
    x = 4,353.34

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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.