Home / 8,380.82-12,572.84-3,186.29

Finding the Fourth Proportional to 8,380.82, 12,572.84 and 3,186.29

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Solution

The fourth proportional to 8,380.82, 12,572.84 and 3,186.29 is: 4,780.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,380.82 : 12,572.84 = 3,186.29 : x
  2. Step 2: Convert to fraction form
    8,380.82/12,572.84 = 3,186.29/x
  3. Step 3: Cross multiply
    8,380.82x = 12,572.84 × 3,186.29
  4. Step 4: Simplify right side
    8,380.82x = 40,060,659.47
  5. Step 5: Solve for x
    x = 40,060,659.47/8,380.82
  6. Step 6: Final answer
    x = 4,780.04

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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.