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Finding the Fourth Proportional to 3,893.74, 5,373.22 and 2,125.31

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Solution

The fourth proportional to 3,893.74, 5,373.22 and 2,125.31 is: 2,932.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,893.74 : 5,373.22 = 2,125.31 : x
  2. Step 2: Convert to fraction form
    3,893.74/5,373.22 = 2,125.31/x
  3. Step 3: Cross multiply
    3,893.74x = 5,373.22 × 2,125.31
  4. Step 4: Simplify right side
    3,893.74x = 11,419,758.20
  5. Step 5: Solve for x
    x = 11,419,758.20/3,893.74
  6. Step 6: Final answer
    x = 2,932.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.