Home / 3,115.20-4,301.73-1,938.27

Finding the Fourth Proportional to 3,115.20, 4,301.73 and 1,938.27

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Solution

The fourth proportional to 3,115.20, 4,301.73 and 1,938.27 is: 2,676.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.20 : 4,301.73 = 1,938.27 : x
  2. Step 2: Convert to fraction form
    3,115.20/4,301.73 = 1,938.27/x
  3. Step 3: Cross multiply
    3,115.20x = 4,301.73 × 1,938.27
  4. Step 4: Simplify right side
    3,115.20x = 8,337,914.21
  5. Step 5: Solve for x
    x = 8,337,914.21/3,115.20
  6. Step 6: Final answer
    x = 2,676.53

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.