Home / 3,874.09-5,346.24-2,105.69

Finding the Fourth Proportional to 3,874.09, 5,346.24 and 2,105.69

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Solution

The fourth proportional to 3,874.09, 5,346.24 and 2,105.69 is: 2,905.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,874.09 : 5,346.24 = 2,105.69 : x
  2. Step 2: Convert to fraction form
    3,874.09/5,346.24 = 2,105.69/x
  3. Step 3: Cross multiply
    3,874.09x = 5,346.24 × 2,105.69
  4. Step 4: Simplify right side
    3,874.09x = 11,257,524.11
  5. Step 5: Solve for x
    x = 11,257,524.11/3,874.09
  6. Step 6: Final answer
    x = 2,905.85

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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.