Home / 3,408.20-5,117.10-2,112.20

Finding the Fourth Proportional to 3,408.20, 5,117.10 and 2,112.20

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Solution

The fourth proportional to 3,408.20, 5,117.10 and 2,112.20 is: 3,171.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,408.20 : 5,117.10 = 2,112.20 : x
  2. Step 2: Convert to fraction form
    3,408.20/5,117.10 = 2,112.20/x
  3. Step 3: Cross multiply
    3,408.20x = 5,117.10 × 2,112.20
  4. Step 4: Simplify right side
    3,408.20x = 10,808,338.62
  5. Step 5: Solve for x
    x = 10,808,338.62/3,408.20
  6. Step 6: Final answer
    x = 3,171.27

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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.