Home / 5,081.36-7,013.40-3,218

Finding the Fourth Proportional to 5,081.36, 7,013.40 and 3,218

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Solution

The fourth proportional to 5,081.36, 7,013.40 and 3,218 is: 4,441.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,081.36 : 7,013.40 = 3,218 : x
  2. Step 2: Convert to fraction form
    5,081.36/7,013.40 = 3,218/x
  3. Step 3: Cross multiply
    5,081.36x = 7,013.40 × 3,218
  4. Step 4: Simplify right side
    5,081.36x = 22,569,121.20
  5. Step 5: Solve for x
    x = 22,569,121.20/5,081.36
  6. Step 6: Final answer
    x = 4,441.55

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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.