Home / 5,414.13-8,121.20-1,310.13

Finding the Fourth Proportional to 5,414.13, 8,121.20 and 1,310.13

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Solution

The fourth proportional to 5,414.13, 8,121.20 and 1,310.13 is: 1,965.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,414.13 : 8,121.20 = 1,310.13 : x
  2. Step 2: Convert to fraction form
    5,414.13/8,121.20 = 1,310.13/x
  3. Step 3: Cross multiply
    5,414.13x = 8,121.20 × 1,310.13
  4. Step 4: Simplify right side
    5,414.13x = 10,639,827.76
  5. Step 5: Solve for x
    x = 10,639,827.76/5,414.13
  6. Step 6: Final answer
    x = 1,965.20

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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.