Home / 8,112.62-12,170.18-3,432.64

Finding the Fourth Proportional to 8,112.62, 12,170.18 and 3,432.64

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Solution

The fourth proportional to 8,112.62, 12,170.18 and 3,432.64 is: 5,149.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,112.62 : 12,170.18 = 3,432.64 : x
  2. Step 2: Convert to fraction form
    8,112.62/12,170.18 = 3,432.64/x
  3. Step 3: Cross multiply
    8,112.62x = 12,170.18 × 3,432.64
  4. Step 4: Simplify right side
    8,112.62x = 41,775,846.68
  5. Step 5: Solve for x
    x = 41,775,846.68/8,112.62
  6. Step 6: Final answer
    x = 5,149.49

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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.