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Finding the Fourth Proportional to 8,591.36, 12,886.86 and 2,747.97

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Solution

The fourth proportional to 8,591.36, 12,886.86 and 2,747.97 is: 4,121.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,591.36 : 12,886.86 = 2,747.97 : x
  2. Step 2: Convert to fraction form
    8,591.36/12,886.86 = 2,747.97/x
  3. Step 3: Cross multiply
    8,591.36x = 12,886.86 × 2,747.97
  4. Step 4: Simplify right side
    8,591.36x = 35,412,640.24
  5. Step 5: Solve for x
    x = 35,412,640.24/8,591.36
  6. Step 6: Final answer
    x = 4,121.89

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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.