Home / 2,331.38-3,217.90-1,337.20

Finding the Fourth Proportional to 2,331.38, 3,217.90 and 1,337.20

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Solution

The fourth proportional to 2,331.38, 3,217.90 and 1,337.20 is: 1,845.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,331.38 : 3,217.90 = 1,337.20 : x
  2. Step 2: Convert to fraction form
    2,331.38/3,217.90 = 1,337.20/x
  3. Step 3: Cross multiply
    2,331.38x = 3,217.90 × 1,337.20
  4. Step 4: Simplify right side
    2,331.38x = 4,302,964.49
  5. Step 5: Solve for x
    x = 4,302,964.49/2,331.38
  6. Step 6: Final answer
    x = 1,845.68

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Half scale
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Double scale
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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.