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Finding the Fourth Proportional to 8,599.40, 12,889.02 and 3,972.68

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Solution

The fourth proportional to 8,599.40, 12,889.02 and 3,972.68 is: 5,954.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,599.40 : 12,889.02 = 3,972.68 : x
  2. Step 2: Convert to fraction form
    8,599.40/12,889.02 = 3,972.68/x
  3. Step 3: Cross multiply
    8,599.40x = 12,889.02 × 3,972.68
  4. Step 4: Simplify right side
    8,599.40x = 51,203,951.97
  5. Step 5: Solve for x
    x = 51,203,951.97/8,599.40
  6. Step 6: Final answer
    x = 5,954.36

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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.