Home / 3,908.75-5,812.92-3,785.72

Finding the Fourth Proportional to 3,908.75, 5,812.92 and 3,785.72

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Solution

The fourth proportional to 3,908.75, 5,812.92 and 3,785.72 is: 5,629.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.75 : 5,812.92 = 3,785.72 : x
  2. Step 2: Convert to fraction form
    3,908.75/5,812.92 = 3,785.72/x
  3. Step 3: Cross multiply
    3,908.75x = 5,812.92 × 3,785.72
  4. Step 4: Simplify right side
    3,908.75x = 22,006,058.44
  5. Step 5: Solve for x
    x = 22,006,058.44/3,908.75
  6. Step 6: Final answer
    x = 5,629.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.