Home / 2,067.12-2,851.92-1,280.88

Finding the Fourth Proportional to 2,067.12, 2,851.92 and 1,280.88

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Solution

The fourth proportional to 2,067.12, 2,851.92 and 1,280.88 is: 1,767.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,067.12 : 2,851.92 = 1,280.88 : x
  2. Step 2: Convert to fraction form
    2,067.12/2,851.92 = 1,280.88/x
  3. Step 3: Cross multiply
    2,067.12x = 2,851.92 × 1,280.88
  4. Step 4: Simplify right side
    2,067.12x = 3,652,967.29
  5. Step 5: Solve for x
    x = 3,652,967.29/2,067.12
  6. Step 6: Final answer
    x = 1,767.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.