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Finding the Fourth Proportional to 9,791.38, 14,687.07 and 2,865.88

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Solution

The fourth proportional to 9,791.38, 14,687.07 and 2,865.88 is: 4,298.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,791.38 : 14,687.07 = 2,865.88 : x
  2. Step 2: Convert to fraction form
    9,791.38/14,687.07 = 2,865.88/x
  3. Step 3: Cross multiply
    9,791.38x = 14,687.07 × 2,865.88
  4. Step 4: Simplify right side
    9,791.38x = 42,091,380.17
  5. Step 5: Solve for x
    x = 42,091,380.17/9,791.38
  6. Step 6: Final answer
    x = 4,298.82

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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.