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Finding the Fourth Proportional to 3,879.83, 5,819.79 and 1,658.36

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Solution

The fourth proportional to 3,879.83, 5,819.79 and 1,658.36 is: 2,487.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.83 : 5,819.79 = 1,658.36 : x
  2. Step 2: Convert to fraction form
    3,879.83/5,819.79 = 1,658.36/x
  3. Step 3: Cross multiply
    3,879.83x = 5,819.79 × 1,658.36
  4. Step 4: Simplify right side
    3,879.83x = 9,651,306.94
  5. Step 5: Solve for x
    x = 9,651,306.94/3,879.83
  6. Step 6: Final answer
    x = 2,487.56

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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.