Home / 3,920.46-5,406.21-2,726.82

Finding the Fourth Proportional to 3,920.46, 5,406.21 and 2,726.82

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Solution

The fourth proportional to 3,920.46, 5,406.21 and 2,726.82 is: 3,760.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.46 : 5,406.21 = 2,726.82 : x
  2. Step 2: Convert to fraction form
    3,920.46/5,406.21 = 2,726.82/x
  3. Step 3: Cross multiply
    3,920.46x = 5,406.21 × 2,726.82
  4. Step 4: Simplify right side
    3,920.46x = 14,741,761.55
  5. Step 5: Solve for x
    x = 14,741,761.55/3,920.46
  6. Step 6: Final answer
    x = 3,760.21

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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.