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Finding the Fourth Proportional to 8,291.52, 12,432.24 and 3,361.92

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Solution

The fourth proportional to 8,291.52, 12,432.24 and 3,361.92 is: 5,040.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,291.52 : 12,432.24 = 3,361.92 : x
  2. Step 2: Convert to fraction form
    8,291.52/12,432.24 = 3,361.92/x
  3. Step 3: Cross multiply
    8,291.52x = 12,432.24 × 3,361.92
  4. Step 4: Simplify right side
    8,291.52x = 41,796,196.30
  5. Step 5: Solve for x
    x = 41,796,196.30/8,291.52
  6. Step 6: Final answer
    x = 5,040.84

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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.