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Finding the Fourth Proportional to 2,248.90, 3,372.84 and 861.73

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Solution

The fourth proportional to 2,248.90, 3,372.84 and 861.73 is: 1,292.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,248.90 : 3,372.84 = 861.73 : x
  2. Step 2: Convert to fraction form
    2,248.90/3,372.84 = 861.73/x
  3. Step 3: Cross multiply
    2,248.90x = 3,372.84 × 861.73
  4. Step 4: Simplify right side
    2,248.90x = 2,906,468.98
  5. Step 5: Solve for x
    x = 2,906,468.98/2,248.90
  6. Step 6: Final answer
    x = 1,292.40

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1.5x scale

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.