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Finding the Fourth Proportional to 8,672.20, 13,008.88 and 3,049.19

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Solution

The fourth proportional to 8,672.20, 13,008.88 and 3,049.19 is: 4,573.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.20 : 13,008.88 = 3,049.19 : x
  2. Step 2: Convert to fraction form
    8,672.20/13,008.88 = 3,049.19/x
  3. Step 3: Cross multiply
    8,672.20x = 13,008.88 × 3,049.19
  4. Step 4: Simplify right side
    8,672.20x = 39,666,546.81
  5. Step 5: Solve for x
    x = 39,666,546.81/8,672.20
  6. Step 6: Final answer
    x = 4,573.99

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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.