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Finding the Fourth Proportional to 2,517.21, 3,776.49 and 873.87

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Solution

The fourth proportional to 2,517.21, 3,776.49 and 873.87 is: 1,311.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,517.21 : 3,776.49 = 873.87 : x
  2. Step 2: Convert to fraction form
    2,517.21/3,776.49 = 873.87/x
  3. Step 3: Cross multiply
    2,517.21x = 3,776.49 × 873.87
  4. Step 4: Simplify right side
    2,517.21x = 3,300,161.32
  5. Step 5: Solve for x
    x = 3,300,161.32/2,517.21
  6. Step 6: Final answer
    x = 1,311.04

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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.