Home / 3,407.75-5,115.27-1,680.02

Finding the Fourth Proportional to 3,407.75, 5,115.27 and 1,680.02

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Solution

The fourth proportional to 3,407.75, 5,115.27 and 1,680.02 is: 2,521.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,407.75 : 5,115.27 = 1,680.02 : x
  2. Step 2: Convert to fraction form
    3,407.75/5,115.27 = 1,680.02/x
  3. Step 3: Cross multiply
    3,407.75x = 5,115.27 × 1,680.02
  4. Step 4: Simplify right side
    3,407.75x = 8,593,755.91
  5. Step 5: Solve for x
    x = 8,593,755.91/3,407.75
  6. Step 6: Final answer
    x = 2,521.83

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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.