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Finding the Fourth Proportional to 8,647.73, 12,972.56 and 3,717.87

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Solution

The fourth proportional to 8,647.73, 12,972.56 and 3,717.87 is: 5,577.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,647.73 : 12,972.56 = 3,717.87 : x
  2. Step 2: Convert to fraction form
    8,647.73/12,972.56 = 3,717.87/x
  3. Step 3: Cross multiply
    8,647.73x = 12,972.56 × 3,717.87
  4. Step 4: Simplify right side
    8,647.73x = 48,230,224.41
  5. Step 5: Solve for x
    x = 48,230,224.41/8,647.73
  6. Step 6: Final answer
    x = 5,577.21

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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.