Home / 2,067.24-3,101.40-680.80

Finding the Fourth Proportional to 2,067.24, 3,101.40 and 680.80

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Solution

The fourth proportional to 2,067.24, 3,101.40 and 680.80 is: 1,021.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,067.24 : 3,101.40 = 680.80 : x
  2. Step 2: Convert to fraction form
    2,067.24/3,101.40 = 680.80/x
  3. Step 3: Cross multiply
    2,067.24x = 3,101.40 × 680.80
  4. Step 4: Simplify right side
    2,067.24x = 2,111,433.12
  5. Step 5: Solve for x
    x = 2,111,433.12/2,067.24
  6. Step 6: Final answer
    x = 1,021.38

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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.