Home / 8,122.38-12,183.59-1,966.38

Finding the Fourth Proportional to 8,122.38, 12,183.59 and 1,966.38

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Solution

The fourth proportional to 8,122.38, 12,183.59 and 1,966.38 is: 2,949.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,122.38 : 12,183.59 = 1,966.38 : x
  2. Step 2: Convert to fraction form
    8,122.38/12,183.59 = 1,966.38/x
  3. Step 3: Cross multiply
    8,122.38x = 12,183.59 × 1,966.38
  4. Step 4: Simplify right side
    8,122.38x = 23,957,567.70
  5. Step 5: Solve for x
    x = 23,957,567.70/8,122.38
  6. Step 6: Final answer
    x = 2,949.57

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Double scale
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Similar ratio
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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.