Home / 8,222.15-12,339.30-5,447.90

Finding the Fourth Proportional to 8,222.15, 12,339.30 and 5,447.90

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Solution

The fourth proportional to 8,222.15, 12,339.30 and 5,447.90 is: 8,175.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,222.15 : 12,339.30 = 5,447.90 : x
  2. Step 2: Convert to fraction form
    8,222.15/12,339.30 = 5,447.90/x
  3. Step 3: Cross multiply
    8,222.15x = 12,339.30 × 5,447.90
  4. Step 4: Simplify right side
    8,222.15x = 67,223,272.47
  5. Step 5: Solve for x
    x = 67,223,272.47/8,222.15
  6. Step 6: Final answer
    x = 8,175.88

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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.