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Finding the Fourth Proportional to 5,176.52, 7,143.18 and 3,608

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Solution

The fourth proportional to 5,176.52, 7,143.18 and 3,608 is: 4,978.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,176.52 : 7,143.18 = 3,608 : x
  2. Step 2: Convert to fraction form
    5,176.52/7,143.18 = 3,608/x
  3. Step 3: Cross multiply
    5,176.52x = 7,143.18 × 3,608
  4. Step 4: Simplify right side
    5,176.52x = 25,772,593.44
  5. Step 5: Solve for x
    x = 25,772,593.44/5,176.52
  6. Step 6: Final answer
    x = 4,978.75

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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.