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Finding the Fourth Proportional to 3,879.52, 5,819.28 and 1,908.48

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Solution

The fourth proportional to 3,879.52, 5,819.28 and 1,908.48 is: 2,862.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.52 : 5,819.28 = 1,908.48 : x
  2. Step 2: Convert to fraction form
    3,879.52/5,819.28 = 1,908.48/x
  3. Step 3: Cross multiply
    3,879.52x = 5,819.28 × 1,908.48
  4. Step 4: Simplify right side
    3,879.52x = 11,105,979.49
  5. Step 5: Solve for x
    x = 11,105,979.49/3,879.52
  6. Step 6: Final answer
    x = 2,862.72

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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.