Home / 3,929.75-5,892.08-2,081.73

Finding the Fourth Proportional to 3,929.75, 5,892.08 and 2,081.73

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Solution

The fourth proportional to 3,929.75, 5,892.08 and 2,081.73 is: 3,121.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.75 : 5,892.08 = 2,081.73 : x
  2. Step 2: Convert to fraction form
    3,929.75/5,892.08 = 2,081.73/x
  3. Step 3: Cross multiply
    3,929.75x = 5,892.08 × 2,081.73
  4. Step 4: Simplify right side
    3,929.75x = 12,265,731.39
  5. Step 5: Solve for x
    x = 12,265,731.39/3,929.75
  6. Step 6: Final answer
    x = 3,121.25

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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.