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Finding the Fourth Proportional to 1,339.82, 2,007.03 and 1,179.44

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Solution

The fourth proportional to 1,339.82, 2,007.03 and 1,179.44 is: 1,766.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339.82 : 2,007.03 = 1,179.44 : x
  2. Step 2: Convert to fraction form
    1,339.82/2,007.03 = 1,179.44/x
  3. Step 3: Cross multiply
    1,339.82x = 2,007.03 × 1,179.44
  4. Step 4: Simplify right side
    1,339.82x = 2,367,171.46
  5. Step 5: Solve for x
    x = 2,367,171.46/1,339.82
  6. Step 6: Final answer
    x = 1,766.78

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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.