Home / 8,120.97-12,168.70-6,276.60

Finding the Fourth Proportional to 8,120.97, 12,168.70 and 6,276.60

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Solution

The fourth proportional to 8,120.97, 12,168.70 and 6,276.60 is: 9,405.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.97 : 12,168.70 = 6,276.60 : x
  2. Step 2: Convert to fraction form
    8,120.97/12,168.70 = 6,276.60/x
  3. Step 3: Cross multiply
    8,120.97x = 12,168.70 × 6,276.60
  4. Step 4: Simplify right side
    8,120.97x = 76,378,046.73
  5. Step 5: Solve for x
    x = 76,378,046.73/8,120.97
  6. Step 6: Final answer
    x = 9,405.04

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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.