Home / 3,906.62-5,390.97-2,228.10

Finding the Fourth Proportional to 3,906.62, 5,390.97 and 2,228.10

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Solution

The fourth proportional to 3,906.62, 5,390.97 and 2,228.10 is: 3,074.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,906.62 : 5,390.97 = 2,228.10 : x
  2. Step 2: Convert to fraction form
    3,906.62/5,390.97 = 2,228.10/x
  3. Step 3: Cross multiply
    3,906.62x = 5,390.97 × 2,228.10
  4. Step 4: Simplify right side
    3,906.62x = 12,011,620.26
  5. Step 5: Solve for x
    x = 12,011,620.26/3,906.62
  6. Step 6: Final answer
    x = 3,074.68

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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.