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Finding the Fourth Proportional to 2,711.73, 4,067.60 and 763.68

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Solution

The fourth proportional to 2,711.73, 4,067.60 and 763.68 is: 1,145.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,711.73 : 4,067.60 = 763.68 : x
  2. Step 2: Convert to fraction form
    2,711.73/4,067.60 = 763.68/x
  3. Step 3: Cross multiply
    2,711.73x = 4,067.60 × 763.68
  4. Step 4: Simplify right side
    2,711.73x = 3,106,340.95
  5. Step 5: Solve for x
    x = 3,106,340.95/2,711.73
  6. Step 6: Final answer
    x = 1,145.52

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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.