Home / 8,122.32-12,183.96-2,279.38

Finding the Fourth Proportional to 8,122.32, 12,183.96 and 2,279.38

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Solution

The fourth proportional to 8,122.32, 12,183.96 and 2,279.38 is: 3,419.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,122.32 : 12,183.96 = 2,279.38 : x
  2. Step 2: Convert to fraction form
    8,122.32/12,183.96 = 2,279.38/x
  3. Step 3: Cross multiply
    8,122.32x = 12,183.96 × 2,279.38
  4. Step 4: Simplify right side
    8,122.32x = 27,771,874.74
  5. Step 5: Solve for x
    x = 27,771,874.74/8,122.32
  6. Step 6: Final answer
    x = 3,419.20

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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.