Home / 8,157.31-12,234.13-3,993.12

Finding the Fourth Proportional to 8,157.31, 12,234.13 and 3,993.12

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Solution

The fourth proportional to 8,157.31, 12,234.13 and 3,993.12 is: 5,988.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,157.31 : 12,234.13 = 3,993.12 : x
  2. Step 2: Convert to fraction form
    8,157.31/12,234.13 = 3,993.12/x
  3. Step 3: Cross multiply
    8,157.31x = 12,234.13 × 3,993.12
  4. Step 4: Simplify right side
    8,157.31x = 48,852,339.20
  5. Step 5: Solve for x
    x = 48,852,339.20/8,157.31
  6. Step 6: Final answer
    x = 5,988.78

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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.