Home / 8,118.69-12,169.26-3,949.43

Finding the Fourth Proportional to 8,118.69, 12,169.26 and 3,949.43

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Solution

The fourth proportional to 8,118.69, 12,169.26 and 3,949.43 is: 5,919.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.69 : 12,169.26 = 3,949.43 : x
  2. Step 2: Convert to fraction form
    8,118.69/12,169.26 = 3,949.43/x
  3. Step 3: Cross multiply
    8,118.69x = 12,169.26 × 3,949.43
  4. Step 4: Simplify right side
    8,118.69x = 48,061,579.68
  5. Step 5: Solve for x
    x = 48,061,579.68/8,118.69
  6. Step 6: Final answer
    x = 5,919.87

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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.