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Finding the Fourth Proportional to 3,879.59, 5,811.17 and 2,411.55

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Solution

The fourth proportional to 3,879.59, 5,811.17 and 2,411.55 is: 3,612.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.59 : 5,811.17 = 2,411.55 : x
  2. Step 2: Convert to fraction form
    3,879.59/5,811.17 = 2,411.55/x
  3. Step 3: Cross multiply
    3,879.59x = 5,811.17 × 2,411.55
  4. Step 4: Simplify right side
    3,879.59x = 14,013,914.96
  5. Step 5: Solve for x
    x = 14,013,914.96/3,879.59
  6. Step 6: Final answer
    x = 3,612.22

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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.