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Finding the Fourth Proportional to 3,168, 4,753.92 and 1,344

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Solution

The fourth proportional to 3,168, 4,753.92 and 1,344 is: 2,016.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,168 : 4,753.92 = 1,344 : x
  2. Step 2: Convert to fraction form
    3,168/4,753.92 = 1,344/x
  3. Step 3: Cross multiply
    3,168x = 4,753.92 × 1,344
  4. Step 4: Simplify right side
    3,168x = 6,389,268.48
  5. Step 5: Solve for x
    x = 6,389,268.48/3,168
  6. Step 6: Final answer
    x = 2,016.81

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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.