Home / 3,711.38-5,122.17-2,220.12

Finding the Fourth Proportional to 3,711.38, 5,122.17 and 2,220.12

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Solution

The fourth proportional to 3,711.38, 5,122.17 and 2,220.12 is: 3,064.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,711.38 : 5,122.17 = 2,220.12 : x
  2. Step 2: Convert to fraction form
    3,711.38/5,122.17 = 2,220.12/x
  3. Step 3: Cross multiply
    3,711.38x = 5,122.17 × 2,220.12
  4. Step 4: Simplify right side
    3,711.38x = 11,371,832.06
  5. Step 5: Solve for x
    x = 11,371,832.06/3,711.38
  6. Step 6: Final answer
    x = 3,064.04

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Half scale
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Double scale
Find fourth proportional to 3,712.38, 5,123.55 and 2,221.12
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.