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Finding the Fourth Proportional to 3,651.78, 5,474.97 and 1,458.84

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Solution

The fourth proportional to 3,651.78, 5,474.97 and 1,458.84 is: 2,187.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,651.78 : 5,474.97 = 1,458.84 : x
  2. Step 2: Convert to fraction form
    3,651.78/5,474.97 = 1,458.84/x
  3. Step 3: Cross multiply
    3,651.78x = 5,474.97 × 1,458.84
  4. Step 4: Simplify right side
    3,651.78x = 7,987,105.23
  5. Step 5: Solve for x
    x = 7,987,105.23/3,651.78
  6. Step 6: Final answer
    x = 2,187.18

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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.