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Finding the Fourth Proportional to 8,080.75, 12,121.13 and 3,463.75

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Solution

The fourth proportional to 8,080.75, 12,121.13 and 3,463.75 is: 5,195.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,080.75 : 12,121.13 = 3,463.75 : x
  2. Step 2: Convert to fraction form
    8,080.75/12,121.13 = 3,463.75/x
  3. Step 3: Cross multiply
    8,080.75x = 12,121.13 × 3,463.75
  4. Step 4: Simplify right side
    8,080.75x = 41,984,546.72
  5. Step 5: Solve for x
    x = 41,984,546.72/8,080.75
  6. Step 6: Final answer
    x = 5,195.63

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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.