Home / 6,481.29-9,719.70-2,781.21

Finding the Fourth Proportional to 6,481.29, 9,719.70 and 2,781.21

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Solution

The fourth proportional to 6,481.29, 9,719.70 and 2,781.21 is: 4,170.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,481.29 : 9,719.70 = 2,781.21 : x
  2. Step 2: Convert to fraction form
    6,481.29/9,719.70 = 2,781.21/x
  3. Step 3: Cross multiply
    6,481.29x = 9,719.70 × 2,781.21
  4. Step 4: Simplify right side
    6,481.29x = 27,032,526.84
  5. Step 5: Solve for x
    x = 27,032,526.84/6,481.29
  6. Step 6: Final answer
    x = 4,170.86

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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.