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Finding the Fourth Proportional to 3,954.64, 5,932.60 and 1,218

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Solution

The fourth proportional to 3,954.64, 5,932.60 and 1,218 is: 1,827.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,954.64 : 5,932.60 = 1,218 : x
  2. Step 2: Convert to fraction form
    3,954.64/5,932.60 = 1,218/x
  3. Step 3: Cross multiply
    3,954.64x = 5,932.60 × 1,218
  4. Step 4: Simplify right side
    3,954.64x = 7,225,906.80
  5. Step 5: Solve for x
    x = 7,225,906.80/3,954.64
  6. Step 6: Final answer
    x = 1,827.20

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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.