Home / 3,874.20-5,346.36-2,105.76

Finding the Fourth Proportional to 3,874.20, 5,346.36 and 2,105.76

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Solution

The fourth proportional to 3,874.20, 5,346.36 and 2,105.76 is: 2,905.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,874.20 : 5,346.36 = 2,105.76 : x
  2. Step 2: Convert to fraction form
    3,874.20/5,346.36 = 2,105.76/x
  3. Step 3: Cross multiply
    3,874.20x = 5,346.36 × 2,105.76
  4. Step 4: Simplify right side
    3,874.20x = 11,258,151.03
  5. Step 5: Solve for x
    x = 11,258,151.03/3,874.20
  6. Step 6: Final answer
    x = 2,905.93

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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.