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Finding the Fourth Proportional to 8,721.80, 13,082.84 and 2,481.80

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Solution

The fourth proportional to 8,721.80, 13,082.84 and 2,481.80 is: 3,722.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.80 : 13,082.84 = 2,481.80 : x
  2. Step 2: Convert to fraction form
    8,721.80/13,082.84 = 2,481.80/x
  3. Step 3: Cross multiply
    8,721.80x = 13,082.84 × 2,481.80
  4. Step 4: Simplify right side
    8,721.80x = 32,468,992.31
  5. Step 5: Solve for x
    x = 32,468,992.31/8,721.80
  6. Step 6: Final answer
    x = 3,722.74

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1.5x scale

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.