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Finding the Fourth Proportional to 8,602.52, 12,909.26 and 3,672.20

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Solution

The fourth proportional to 8,602.52, 12,909.26 and 3,672.20 is: 5,510.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,602.52 : 12,909.26 = 3,672.20 : x
  2. Step 2: Convert to fraction form
    8,602.52/12,909.26 = 3,672.20/x
  3. Step 3: Cross multiply
    8,602.52x = 12,909.26 × 3,672.20
  4. Step 4: Simplify right side
    8,602.52x = 47,405,405.37
  5. Step 5: Solve for x
    x = 47,405,405.37/8,602.52
  6. Step 6: Final answer
    x = 5,510.64

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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.