Home / 5,414.38-8,121.57-1,310.38

Finding the Fourth Proportional to 5,414.38, 8,121.57 and 1,310.38

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Solution

The fourth proportional to 5,414.38, 8,121.57 and 1,310.38 is: 1,965.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,414.38 : 8,121.57 = 1,310.38 : x
  2. Step 2: Convert to fraction form
    5,414.38/8,121.57 = 1,310.38/x
  3. Step 3: Cross multiply
    5,414.38x = 8,121.57 × 1,310.38
  4. Step 4: Simplify right side
    5,414.38x = 10,642,342.90
  5. Step 5: Solve for x
    x = 10,642,342.90/5,414.38
  6. Step 6: Final answer
    x = 1,965.57

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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.