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Finding the Fourth Proportional to 8,644.39, 12,966.84 and 3,379.19

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Solution

The fourth proportional to 8,644.39, 12,966.84 and 3,379.19 is: 5,068.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,644.39 : 12,966.84 = 3,379.19 : x
  2. Step 2: Convert to fraction form
    8,644.39/12,966.84 = 3,379.19/x
  3. Step 3: Cross multiply
    8,644.39x = 12,966.84 × 3,379.19
  4. Step 4: Simplify right side
    8,644.39x = 43,817,380.95
  5. Step 5: Solve for x
    x = 43,817,380.95/8,644.39
  6. Step 6: Final answer
    x = 5,068.88

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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.