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Finding the Fourth Proportional to 2,250.64, 3,105.62 and 1,255.88

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Solution

The fourth proportional to 2,250.64, 3,105.62 and 1,255.88 is: 1,732.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,250.64 : 3,105.62 = 1,255.88 : x
  2. Step 2: Convert to fraction form
    2,250.64/3,105.62 = 1,255.88/x
  3. Step 3: Cross multiply
    2,250.64x = 3,105.62 × 1,255.88
  4. Step 4: Simplify right side
    2,250.64x = 3,900,279.97
  5. Step 5: Solve for x
    x = 3,900,279.97/2,250.64
  6. Step 6: Final answer
    x = 1,732.97

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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.