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Finding the Fourth Proportional to 11,791.87, 17,687.55 and 3,471.68

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Solution

The fourth proportional to 11,791.87, 17,687.55 and 3,471.68 is: 5,207.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,791.87 : 17,687.55 = 3,471.68 : x
  2. Step 2: Convert to fraction form
    11,791.87/17,687.55 = 3,471.68/x
  3. Step 3: Cross multiply
    11,791.87x = 17,687.55 × 3,471.68
  4. Step 4: Simplify right side
    11,791.87x = 61,405,513.58
  5. Step 5: Solve for x
    x = 61,405,513.58/11,791.87
  6. Step 6: Final answer
    x = 5,207.44

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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.