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Finding the Fourth Proportional to 3,879.86, 5,816.23 and 1,414.15

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Solution

The fourth proportional to 3,879.86, 5,816.23 and 1,414.15 is: 2,119.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.86 : 5,816.23 = 1,414.15 : x
  2. Step 2: Convert to fraction form
    3,879.86/5,816.23 = 1,414.15/x
  3. Step 3: Cross multiply
    3,879.86x = 5,816.23 × 1,414.15
  4. Step 4: Simplify right side
    3,879.86x = 8,225,003.58
  5. Step 5: Solve for x
    x = 8,225,003.58/3,879.86
  6. Step 6: Final answer
    x = 2,119.93

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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.