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Finding the Fourth Proportional to 3,893.39, 5,372.73 and 2,125.00

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Solution

The fourth proportional to 3,893.39, 5,372.73 and 2,125.00 is: 2,932.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,893.39 : 5,372.73 = 2,125.00 : x
  2. Step 2: Convert to fraction form
    3,893.39/5,372.73 = 2,125.00/x
  3. Step 3: Cross multiply
    3,893.39x = 5,372.73 × 2,125.00
  4. Step 4: Simplify right side
    3,893.39x = 11,417,035.30
  5. Step 5: Solve for x
    x = 11,417,035.30/3,893.39
  6. Step 6: Final answer
    x = 2,932.41

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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.