Home / 8,081.30-12,122.51-3,149.30

Finding the Fourth Proportional to 8,081.30, 12,122.51 and 3,149.30

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Solution

The fourth proportional to 8,081.30, 12,122.51 and 3,149.30 is: 4,724.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,081.30 : 12,122.51 = 3,149.30 : x
  2. Step 2: Convert to fraction form
    8,081.30/12,122.51 = 3,149.30/x
  3. Step 3: Cross multiply
    8,081.30x = 12,122.51 × 3,149.30
  4. Step 4: Simplify right side
    8,081.30x = 38,177,420.74
  5. Step 5: Solve for x
    x = 38,177,420.74/8,081.30
  6. Step 6: Final answer
    x = 4,724.17

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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.