Home / 3,123.97-4,311.07-1,726.72

Finding the Fourth Proportional to 3,123.97, 4,311.07 and 1,726.72

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Solution

The fourth proportional to 3,123.97, 4,311.07 and 1,726.72 is: 2,382.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.97 : 4,311.07 = 1,726.72 : x
  2. Step 2: Convert to fraction form
    3,123.97/4,311.07 = 1,726.72/x
  3. Step 3: Cross multiply
    3,123.97x = 4,311.07 × 1,726.72
  4. Step 4: Simplify right side
    3,123.97x = 7,444,010.79
  5. Step 5: Solve for x
    x = 7,444,010.79/3,123.97
  6. Step 6: Final answer
    x = 2,382.87

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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.