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Finding the Fourth Proportional to 1,766.61, 2,440.13 and 1,244.97

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Solution

The fourth proportional to 1,766.61, 2,440.13 and 1,244.97 is: 1,719.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,766.61 : 2,440.13 = 1,244.97 : x
  2. Step 2: Convert to fraction form
    1,766.61/2,440.13 = 1,244.97/x
  3. Step 3: Cross multiply
    1,766.61x = 2,440.13 × 1,244.97
  4. Step 4: Simplify right side
    1,766.61x = 3,037,882.42
  5. Step 5: Solve for x
    x = 3,037,882.42/1,766.61
  6. Step 6: Final answer
    x = 1,719.61

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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.