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Finding the Fourth Proportional to 8,447.32, 12,672.42 and 2,603.80

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Solution

The fourth proportional to 8,447.32, 12,672.42 and 2,603.80 is: 3,906.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,447.32 : 12,672.42 = 2,603.80 : x
  2. Step 2: Convert to fraction form
    8,447.32/12,672.42 = 2,603.80/x
  3. Step 3: Cross multiply
    8,447.32x = 12,672.42 × 2,603.80
  4. Step 4: Simplify right side
    8,447.32x = 32,996,447.20
  5. Step 5: Solve for x
    x = 32,996,447.20/8,447.32
  6. Step 6: Final answer
    x = 3,906.14

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1.5x scale

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.