Home / 2,680.20-4,020.30-2,655.90

Finding the Fourth Proportional to 2,680.20, 4,020.30 and 2,655.90

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Solution

The fourth proportional to 2,680.20, 4,020.30 and 2,655.90 is: 3,983.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,680.20 : 4,020.30 = 2,655.90 : x
  2. Step 2: Convert to fraction form
    2,680.20/4,020.30 = 2,655.90/x
  3. Step 3: Cross multiply
    2,680.20x = 4,020.30 × 2,655.90
  4. Step 4: Simplify right side
    2,680.20x = 10,677,514.77
  5. Step 5: Solve for x
    x = 10,677,514.77/2,680.20
  6. Step 6: Final answer
    x = 3,983.85

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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.