Home / 3,920.82-5,412.42-2,408.63

Finding the Fourth Proportional to 3,920.82, 5,412.42 and 2,408.63

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Solution

The fourth proportional to 3,920.82, 5,412.42 and 2,408.63 is: 3,324.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.82 : 5,412.42 = 2,408.63 : x
  2. Step 2: Convert to fraction form
    3,920.82/5,412.42 = 2,408.63/x
  3. Step 3: Cross multiply
    3,920.82x = 5,412.42 × 2,408.63
  4. Step 4: Simplify right side
    3,920.82x = 13,036,517.18
  5. Step 5: Solve for x
    x = 13,036,517.18/3,920.82
  6. Step 6: Final answer
    x = 3,324.95

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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.