Home / 2,581.08-3,876.60-2,211.72

Finding the Fourth Proportional to 2,581.08, 3,876.60 and 2,211.72

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Solution

The fourth proportional to 2,581.08, 3,876.60 and 2,211.72 is: 3,321.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,581.08 : 3,876.60 = 2,211.72 : x
  2. Step 2: Convert to fraction form
    2,581.08/3,876.60 = 2,211.72/x
  3. Step 3: Cross multiply
    2,581.08x = 3,876.60 × 2,211.72
  4. Step 4: Simplify right side
    2,581.08x = 8,573,953.75
  5. Step 5: Solve for x
    x = 8,573,953.75/2,581.08
  6. Step 6: Final answer
    x = 3,321.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.