Home / 3,408.21-5,103.68-2,105.73

Finding the Fourth Proportional to 3,408.21, 5,103.68 and 2,105.73

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Solution

The fourth proportional to 3,408.21, 5,103.68 and 2,105.73 is: 3,153.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,408.21 : 5,103.68 = 2,105.73 : x
  2. Step 2: Convert to fraction form
    3,408.21/5,103.68 = 2,105.73/x
  3. Step 3: Cross multiply
    3,408.21x = 5,103.68 × 2,105.73
  4. Step 4: Simplify right side
    3,408.21x = 10,746,961.56
  5. Step 5: Solve for x
    x = 10,746,961.56/3,408.21
  6. Step 6: Final answer
    x = 3,153.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.