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Finding the Fourth Proportional to 5,921.52, 8,168.49 and 3,822

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Solution

The fourth proportional to 5,921.52, 8,168.49 and 3,822 is: 5,272.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,921.52 : 8,168.49 = 3,822 : x
  2. Step 2: Convert to fraction form
    5,921.52/8,168.49 = 3,822/x
  3. Step 3: Cross multiply
    5,921.52x = 8,168.49 × 3,822
  4. Step 4: Simplify right side
    5,921.52x = 31,219,968.78
  5. Step 5: Solve for x
    x = 31,219,968.78/5,921.52
  6. Step 6: Final answer
    x = 5,272.29

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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.