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Finding the Fourth Proportional to 8,150.80, 12,226.20 and 3,220.60

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Solution

The fourth proportional to 8,150.80, 12,226.20 and 3,220.60 is: 4,830.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,150.80 : 12,226.20 = 3,220.60 : x
  2. Step 2: Convert to fraction form
    8,150.80/12,226.20 = 3,220.60/x
  3. Step 3: Cross multiply
    8,150.80x = 12,226.20 × 3,220.60
  4. Step 4: Simplify right side
    8,150.80x = 39,375,699.72
  5. Step 5: Solve for x
    x = 39,375,699.72/8,150.80
  6. Step 6: Final answer
    x = 4,830.90

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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.