Home / 8,222.80-12,334.20-3,289.90

Finding the Fourth Proportional to 8,222.80, 12,334.20 and 3,289.90

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Solution

The fourth proportional to 8,222.80, 12,334.20 and 3,289.90 is: 4,934.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,222.80 : 12,334.20 = 3,289.90 : x
  2. Step 2: Convert to fraction form
    8,222.80/12,334.20 = 3,289.90/x
  3. Step 3: Cross multiply
    8,222.80x = 12,334.20 × 3,289.90
  4. Step 4: Simplify right side
    8,222.80x = 40,578,284.58
  5. Step 5: Solve for x
    x = 40,578,284.58/8,222.80
  6. Step 6: Final answer
    x = 4,934.85

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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.