Home / 3,309.76-4,961.28-2,078.04

Finding the Fourth Proportional to 3,309.76, 4,961.28 and 2,078.04

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Solution

The fourth proportional to 3,309.76, 4,961.28 and 2,078.04 is: 3,114.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,309.76 : 4,961.28 = 2,078.04 : x
  2. Step 2: Convert to fraction form
    3,309.76/4,961.28 = 2,078.04/x
  3. Step 3: Cross multiply
    3,309.76x = 4,961.28 × 2,078.04
  4. Step 4: Simplify right side
    3,309.76x = 10,309,738.29
  5. Step 5: Solve for x
    x = 10,309,738.29/3,309.76
  6. Step 6: Final answer
    x = 3,114.95

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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.