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Finding the Fourth Proportional to 5,511.87, 8,256.87 and 2,581.29

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Solution

The fourth proportional to 5,511.87, 8,256.87 and 2,581.29 is: 3,866.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,511.87 : 8,256.87 = 2,581.29 : x
  2. Step 2: Convert to fraction form
    5,511.87/8,256.87 = 2,581.29/x
  3. Step 3: Cross multiply
    5,511.87x = 8,256.87 × 2,581.29
  4. Step 4: Simplify right side
    5,511.87x = 21,313,375.96
  5. Step 5: Solve for x
    x = 21,313,375.96/5,511.87
  6. Step 6: Final answer
    x = 3,866.81

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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.