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Finding the Fourth Proportional to 3,940.47, 5,436.02 and 2,523.47

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Solution

The fourth proportional to 3,940.47, 5,436.02 and 2,523.47 is: 3,481.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.47 : 5,436.02 = 2,523.47 : x
  2. Step 2: Convert to fraction form
    3,940.47/5,436.02 = 2,523.47/x
  3. Step 3: Cross multiply
    3,940.47x = 5,436.02 × 2,523.47
  4. Step 4: Simplify right side
    3,940.47x = 13,717,633.39
  5. Step 5: Solve for x
    x = 13,717,633.39/3,940.47
  6. Step 6: Final answer
    x = 3,481.22

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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.