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Finding the Fourth Proportional to 8,563.68, 12,849.18 and 2,720.76

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Solution

The fourth proportional to 8,563.68, 12,849.18 and 2,720.76 is: 4,082.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,563.68 : 12,849.18 = 2,720.76 : x
  2. Step 2: Convert to fraction form
    8,563.68/12,849.18 = 2,720.76/x
  3. Step 3: Cross multiply
    8,563.68x = 12,849.18 × 2,720.76
  4. Step 4: Simplify right side
    8,563.68x = 34,959,534.98
  5. Step 5: Solve for x
    x = 34,959,534.98/8,563.68
  6. Step 6: Final answer
    x = 4,082.30

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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.