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Finding the Fourth Proportional to 8,967.60, 13,449.78 and 3,972.22

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Solution

The fourth proportional to 8,967.60, 13,449.78 and 3,972.22 is: 5,957.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,967.60 : 13,449.78 = 3,972.22 : x
  2. Step 2: Convert to fraction form
    8,967.60/13,449.78 = 3,972.22/x
  3. Step 3: Cross multiply
    8,967.60x = 13,449.78 × 3,972.22
  4. Step 4: Simplify right side
    8,967.60x = 53,425,485.11
  5. Step 5: Solve for x
    x = 53,425,485.11/8,967.60
  6. Step 6: Final answer
    x = 5,957.61

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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.