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Finding the Fourth Proportional to 9,364.78, 14,049.78 and 2,791.18

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Solution

The fourth proportional to 9,364.78, 14,049.78 and 2,791.18 is: 4,187.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,364.78 : 14,049.78 = 2,791.18 : x
  2. Step 2: Convert to fraction form
    9,364.78/14,049.78 = 2,791.18/x
  3. Step 3: Cross multiply
    9,364.78x = 14,049.78 × 2,791.18
  4. Step 4: Simplify right side
    9,364.78x = 39,215,464.94
  5. Step 5: Solve for x
    x = 39,215,464.94/9,364.78
  6. Step 6: Final answer
    x = 4,187.55

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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.