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Finding the Fourth Proportional to 8,149.80, 12,216.60 and 3,759.60

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Solution

The fourth proportional to 8,149.80, 12,216.60 and 3,759.60 is: 5,635.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,149.80 : 12,216.60 = 3,759.60 : x
  2. Step 2: Convert to fraction form
    8,149.80/12,216.60 = 3,759.60/x
  3. Step 3: Cross multiply
    8,149.80x = 12,216.60 × 3,759.60
  4. Step 4: Simplify right side
    8,149.80x = 45,929,529.36
  5. Step 5: Solve for x
    x = 45,929,529.36/8,149.80
  6. Step 6: Final answer
    x = 5,635.66

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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.