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Finding the Fourth Proportional to 3,265.89, 4,887.90 and 2,680.87

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Solution

The fourth proportional to 3,265.89, 4,887.90 and 2,680.87 is: 4,012.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,265.89 : 4,887.90 = 2,680.87 : x
  2. Step 2: Convert to fraction form
    3,265.89/4,887.90 = 2,680.87/x
  3. Step 3: Cross multiply
    3,265.89x = 4,887.90 × 2,680.87
  4. Step 4: Simplify right side
    3,265.89x = 13,103,812.25
  5. Step 5: Solve for x
    x = 13,103,812.25/3,265.89
  6. Step 6: Final answer
    x = 4,012.33

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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.