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Finding the Fourth Proportional to 2,169.26, 3,253.92 and 935.90

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Solution

The fourth proportional to 2,169.26, 3,253.92 and 935.90 is: 1,403.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,169.26 : 3,253.92 = 935.90 : x
  2. Step 2: Convert to fraction form
    2,169.26/3,253.92 = 935.90/x
  3. Step 3: Cross multiply
    2,169.26x = 3,253.92 × 935.90
  4. Step 4: Simplify right side
    2,169.26x = 3,045,343.73
  5. Step 5: Solve for x
    x = 3,045,343.73/2,169.26
  6. Step 6: Final answer
    x = 1,403.86

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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.