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Finding the Fourth Proportional to 8,591.29, 12,886.31 and 2,668.01

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Solution

The fourth proportional to 8,591.29, 12,886.31 and 2,668.01 is: 4,001.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,591.29 : 12,886.31 = 2,668.01 : x
  2. Step 2: Convert to fraction form
    8,591.29/12,886.31 = 2,668.01/x
  3. Step 3: Cross multiply
    8,591.29x = 12,886.31 × 2,668.01
  4. Step 4: Simplify right side
    8,591.29x = 34,380,803.94
  5. Step 5: Solve for x
    x = 34,380,803.94/8,591.29
  6. Step 6: Final answer
    x = 4,001.82

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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.