Home / 3,908.97-5,394.39-2,140.54

Finding the Fourth Proportional to 3,908.97, 5,394.39 and 2,140.54

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Solution

The fourth proportional to 3,908.97, 5,394.39 and 2,140.54 is: 2,953.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.97 : 5,394.39 = 2,140.54 : x
  2. Step 2: Convert to fraction form
    3,908.97/5,394.39 = 2,140.54/x
  3. Step 3: Cross multiply
    3,908.97x = 5,394.39 × 2,140.54
  4. Step 4: Simplify right side
    3,908.97x = 11,546,907.57
  5. Step 5: Solve for x
    x = 11,546,907.57/3,908.97
  6. Step 6: Final answer
    x = 2,953.95

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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.