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Finding the Fourth Proportional to 7,163.25, 9,886.49 and 4,179.42

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Solution

The fourth proportional to 7,163.25, 9,886.49 and 4,179.42 is: 5,768.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,163.25 : 9,886.49 = 4,179.42 : x
  2. Step 2: Convert to fraction form
    7,163.25/9,886.49 = 4,179.42/x
  3. Step 3: Cross multiply
    7,163.25x = 9,886.49 × 4,179.42
  4. Step 4: Simplify right side
    7,163.25x = 41,319,794.04
  5. Step 5: Solve for x
    x = 41,319,794.04/7,163.25
  6. Step 6: Final answer
    x = 5,768.30

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.