Home / 7,717.89-11,571.17-3,821.39

Finding the Fourth Proportional to 7,717.89, 11,571.17 and 3,821.39

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Solution

The fourth proportional to 7,717.89, 11,571.17 and 3,821.39 is: 5,729.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,717.89 : 11,571.17 = 3,821.39 : x
  2. Step 2: Convert to fraction form
    7,717.89/11,571.17 = 3,821.39/x
  3. Step 3: Cross multiply
    7,717.89x = 11,571.17 × 3,821.39
  4. Step 4: Simplify right side
    7,717.89x = 44,217,876.36
  5. Step 5: Solve for x
    x = 44,217,876.36/7,717.89
  6. Step 6: Final answer
    x = 5,729.27

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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.