Home / 3,960.78-5,465.40-2,282.73

Finding the Fourth Proportional to 3,960.78, 5,465.40 and 2,282.73

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Solution

The fourth proportional to 3,960.78, 5,465.40 and 2,282.73 is: 3,149.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.78 : 5,465.40 = 2,282.73 : x
  2. Step 2: Convert to fraction form
    3,960.78/5,465.40 = 2,282.73/x
  3. Step 3: Cross multiply
    3,960.78x = 5,465.40 × 2,282.73
  4. Step 4: Simplify right side
    3,960.78x = 12,476,046.21
  5. Step 5: Solve for x
    x = 12,476,046.21/3,960.78
  6. Step 6: Final answer
    x = 3,149.89

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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.