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Finding the Fourth Proportional to 2,644.97, 3,967.85 and 697.32

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Solution

The fourth proportional to 2,644.97, 3,967.85 and 697.32 is: 1,046.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,644.97 : 3,967.85 = 697.32 : x
  2. Step 2: Convert to fraction form
    2,644.97/3,967.85 = 697.32/x
  3. Step 3: Cross multiply
    2,644.97x = 3,967.85 × 697.32
  4. Step 4: Simplify right side
    2,644.97x = 2,766,862.91
  5. Step 5: Solve for x
    x = 2,766,862.91/2,644.97
  6. Step 6: Final answer
    x = 1,046.09

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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.