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Finding the Fourth Proportional to 3,893.61, 5,373.15 and 2,125.22

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Solution

The fourth proportional to 3,893.61, 5,373.15 and 2,125.22 is: 2,932.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,893.61 : 5,373.15 = 2,125.22 : x
  2. Step 2: Convert to fraction form
    3,893.61/5,373.15 = 2,125.22/x
  3. Step 3: Cross multiply
    3,893.61x = 5,373.15 × 2,125.22
  4. Step 4: Simplify right side
    3,893.61x = 11,419,098.98
  5. Step 5: Solve for x
    x = 11,419,098.98/3,893.61
  6. Step 6: Final answer
    x = 2,932.78

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1.5x scale

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.