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Finding the Fourth Proportional to 3,918.54, 5,879.15 and 2,455.95

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Solution

The fourth proportional to 3,918.54, 5,879.15 and 2,455.95 is: 3,684.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.54 : 5,879.15 = 2,455.95 : x
  2. Step 2: Convert to fraction form
    3,918.54/5,879.15 = 2,455.95/x
  3. Step 3: Cross multiply
    3,918.54x = 5,879.15 × 2,455.95
  4. Step 4: Simplify right side
    3,918.54x = 14,438,898.44
  5. Step 5: Solve for x
    x = 14,438,898.44/3,918.54
  6. Step 6: Final answer
    x = 3,684.76

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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.