Home / 3,121.92-4,306.32-2,616.48

Finding the Fourth Proportional to 3,121.92, 4,306.32 and 2,616.48

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Solution

The fourth proportional to 3,121.92, 4,306.32 and 2,616.48 is: 3,609.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.92 : 4,306.32 = 2,616.48 : x
  2. Step 2: Convert to fraction form
    3,121.92/4,306.32 = 2,616.48/x
  3. Step 3: Cross multiply
    3,121.92x = 4,306.32 × 2,616.48
  4. Step 4: Simplify right side
    3,121.92x = 11,267,400.15
  5. Step 5: Solve for x
    x = 11,267,400.15/3,121.92
  6. Step 6: Final answer
    x = 3,609.13

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.