Home / 8,121.83-12,183.38-2,575.49

Finding the Fourth Proportional to 8,121.83, 12,183.38 and 2,575.49

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Solution

The fourth proportional to 8,121.83, 12,183.38 and 2,575.49 is: 3,863.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.83 : 12,183.38 = 2,575.49 : x
  2. Step 2: Convert to fraction form
    8,121.83/12,183.38 = 2,575.49/x
  3. Step 3: Cross multiply
    8,121.83x = 12,183.38 × 2,575.49
  4. Step 4: Simplify right side
    8,121.83x = 31,378,160.48
  5. Step 5: Solve for x
    x = 31,378,160.48/8,121.83
  6. Step 6: Final answer
    x = 3,863.43

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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.