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Finding the Fourth Proportional to 1,781.97, 2,659.19 and 1,565.99

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Solution

The fourth proportional to 1,781.97, 2,659.19 and 1,565.99 is: 2,336.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.97 : 2,659.19 = 1,565.99 : x
  2. Step 2: Convert to fraction form
    1,781.97/2,659.19 = 1,565.99/x
  3. Step 3: Cross multiply
    1,781.97x = 2,659.19 × 1,565.99
  4. Step 4: Simplify right side
    1,781.97x = 4,164,264.95
  5. Step 5: Solve for x
    x = 4,164,264.95/1,781.97
  6. Step 6: Final answer
    x = 2,336.89

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.