Home / 8,084.62-12,129.97-2,820.03

Finding the Fourth Proportional to 8,084.62, 12,129.97 and 2,820.03

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Solution

The fourth proportional to 8,084.62, 12,129.97 and 2,820.03 is: 4,231.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,084.62 : 12,129.97 = 2,820.03 : x
  2. Step 2: Convert to fraction form
    8,084.62/12,129.97 = 2,820.03/x
  3. Step 3: Cross multiply
    8,084.62x = 12,129.97 × 2,820.03
  4. Step 4: Simplify right side
    8,084.62x = 34,206,879.30
  5. Step 5: Solve for x
    x = 34,206,879.30/8,084.62
  6. Step 6: Final answer
    x = 4,231.11

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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.