Home / 5,812.97-8,721.78-2,115.45

Finding the Fourth Proportional to 5,812.97, 8,721.78 and 2,115.45

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Solution

The fourth proportional to 5,812.97, 8,721.78 and 2,115.45 is: 3,174.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,812.97 : 8,721.78 = 2,115.45 : x
  2. Step 2: Convert to fraction form
    5,812.97/8,721.78 = 2,115.45/x
  3. Step 3: Cross multiply
    5,812.97x = 8,721.78 × 2,115.45
  4. Step 4: Simplify right side
    5,812.97x = 18,450,481.57
  5. Step 5: Solve for x
    x = 18,450,481.57/5,812.97
  6. Step 6: Final answer
    x = 3,174.02

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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.