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Finding the Fourth Proportional to 7,239.92, 10,839.89 and 3,722.33

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Solution

The fourth proportional to 7,239.92, 10,839.89 and 3,722.33 is: 5,573.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,239.92 : 10,839.89 = 3,722.33 : x
  2. Step 2: Convert to fraction form
    7,239.92/10,839.89 = 3,722.33/x
  3. Step 3: Cross multiply
    7,239.92x = 10,839.89 × 3,722.33
  4. Step 4: Simplify right side
    7,239.92x = 40,349,574.93
  5. Step 5: Solve for x
    x = 40,349,574.93/7,239.92
  6. Step 6: Final answer
    x = 5,573.21

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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.