Home / 2,221.66-3,067-1,382.64

Finding the Fourth Proportional to 2,221.66, 3,067 and 1,382.64

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Solution

The fourth proportional to 2,221.66, 3,067 and 1,382.64 is: 1,908.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.66 : 3,067 = 1,382.64 : x
  2. Step 2: Convert to fraction form
    2,221.66/3,067 = 1,382.64/x
  3. Step 3: Cross multiply
    2,221.66x = 3,067 × 1,382.64
  4. Step 4: Simplify right side
    2,221.66x = 4,240,556.88
  5. Step 5: Solve for x
    x = 4,240,556.88/2,221.66
  6. Step 6: Final answer
    x = 1,908.73

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1.5x scale

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.