Home / 1,572.09-2,168.66-1,067.78

Finding the Fourth Proportional to 1,572.09, 2,168.66 and 1,067.78

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Solution

The fourth proportional to 1,572.09, 2,168.66 and 1,067.78 is: 1,472.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572.09 : 2,168.66 = 1,067.78 : x
  2. Step 2: Convert to fraction form
    1,572.09/2,168.66 = 1,067.78/x
  3. Step 3: Cross multiply
    1,572.09x = 2,168.66 × 1,067.78
  4. Step 4: Simplify right side
    1,572.09x = 2,315,635.59
  5. Step 5: Solve for x
    x = 2,315,635.59/1,572.09
  6. Step 6: Final answer
    x = 1,472.97

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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.