Home / 3,974.20-5,961.30-2,519.80

Finding the Fourth Proportional to 3,974.20, 5,961.30 and 2,519.80

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Solution

The fourth proportional to 3,974.20, 5,961.30 and 2,519.80 is: 3,779.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,974.20 : 5,961.30 = 2,519.80 : x
  2. Step 2: Convert to fraction form
    3,974.20/5,961.30 = 2,519.80/x
  3. Step 3: Cross multiply
    3,974.20x = 5,961.30 × 2,519.80
  4. Step 4: Simplify right side
    3,974.20x = 15,021,283.74
  5. Step 5: Solve for x
    x = 15,021,283.74/3,974.20
  6. Step 6: Final answer
    x = 3,779.70

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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.