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Finding the Fourth Proportional to 2,449.97, 3,381.13 and 1,387.73

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Solution

The fourth proportional to 2,449.97, 3,381.13 and 1,387.73 is: 1,915.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,449.97 : 3,381.13 = 1,387.73 : x
  2. Step 2: Convert to fraction form
    2,449.97/3,381.13 = 1,387.73/x
  3. Step 3: Cross multiply
    2,449.97x = 3,381.13 × 1,387.73
  4. Step 4: Simplify right side
    2,449.97x = 4,692,078.63
  5. Step 5: Solve for x
    x = 4,692,078.63/2,449.97
  6. Step 6: Final answer
    x = 1,915.16

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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.