Home / 3,920.23-5,404.92-2,859.54

Finding the Fourth Proportional to 3,920.23, 5,404.92 and 2,859.54

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Solution

The fourth proportional to 3,920.23, 5,404.92 and 2,859.54 is: 3,942.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.23 : 5,404.92 = 2,859.54 : x
  2. Step 2: Convert to fraction form
    3,920.23/5,404.92 = 2,859.54/x
  3. Step 3: Cross multiply
    3,920.23x = 5,404.92 × 2,859.54
  4. Step 4: Simplify right side
    3,920.23x = 15,455,584.94
  5. Step 5: Solve for x
    x = 15,455,584.94/3,920.23
  6. Step 6: Final answer
    x = 3,942.52

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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.