Home / 2,687.98-4,019.97-2,021.38

Finding the Fourth Proportional to 2,687.98, 4,019.97 and 2,021.38

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Solution

The fourth proportional to 2,687.98, 4,019.97 and 2,021.38 is: 3,023.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.98 : 4,019.97 = 2,021.38 : x
  2. Step 2: Convert to fraction form
    2,687.98/4,019.97 = 2,021.38/x
  3. Step 3: Cross multiply
    2,687.98x = 4,019.97 × 2,021.38
  4. Step 4: Simplify right side
    2,687.98x = 8,125,876.85
  5. Step 5: Solve for x
    x = 8,125,876.85/2,687.98
  6. Step 6: Final answer
    x = 3,023.04

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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.