Home / 8,380.50-12,572.28-3,447.45

Finding the Fourth Proportional to 8,380.50, 12,572.28 and 3,447.45

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Solution

The fourth proportional to 8,380.50, 12,572.28 and 3,447.45 is: 5,171.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,380.50 : 12,572.28 = 3,447.45 : x
  2. Step 2: Convert to fraction form
    8,380.50/12,572.28 = 3,447.45/x
  3. Step 3: Cross multiply
    8,380.50x = 12,572.28 × 3,447.45
  4. Step 4: Simplify right side
    8,380.50x = 43,342,306.69
  5. Step 5: Solve for x
    x = 43,342,306.69/8,380.50
  6. Step 6: Final answer
    x = 5,171.80

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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.