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Finding the Fourth Proportional to 8,672.64, 12,997.56 and 3,472.44

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Solution

The fourth proportional to 8,672.64, 12,997.56 and 3,472.44 is: 5,204.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.64 : 12,997.56 = 3,472.44 : x
  2. Step 2: Convert to fraction form
    8,672.64/12,997.56 = 3,472.44/x
  3. Step 3: Cross multiply
    8,672.64x = 12,997.56 × 3,472.44
  4. Step 4: Simplify right side
    8,672.64x = 45,133,247.25
  5. Step 5: Solve for x
    x = 45,133,247.25/8,672.64
  6. Step 6: Final answer
    x = 5,204.10

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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.