Home / 8,111.80-12,169.14-3,183.76

Finding the Fourth Proportional to 8,111.80, 12,169.14 and 3,183.76

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Solution

The fourth proportional to 8,111.80, 12,169.14 and 3,183.76 is: 4,776.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,111.80 : 12,169.14 = 3,183.76 : x
  2. Step 2: Convert to fraction form
    8,111.80/12,169.14 = 3,183.76/x
  3. Step 3: Cross multiply
    8,111.80x = 12,169.14 × 3,183.76
  4. Step 4: Simplify right side
    8,111.80x = 38,743,621.17
  5. Step 5: Solve for x
    x = 38,743,621.17/8,111.80
  6. Step 6: Final answer
    x = 4,776.21

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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.