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Finding the Fourth Proportional to 3,866.14, 5,799.19 and 1,917.88

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Solution

The fourth proportional to 3,866.14, 5,799.19 and 1,917.88 is: 2,876.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,866.14 : 5,799.19 = 1,917.88 : x
  2. Step 2: Convert to fraction form
    3,866.14/5,799.19 = 1,917.88/x
  3. Step 3: Cross multiply
    3,866.14x = 5,799.19 × 1,917.88
  4. Step 4: Simplify right side
    3,866.14x = 11,122,150.52
  5. Step 5: Solve for x
    x = 11,122,150.52/3,866.14
  6. Step 6: Final answer
    x = 2,876.81

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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.