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Finding the Fourth Proportional to 9,279.76, 13,919.79 and 3,040.43

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Solution

The fourth proportional to 9,279.76, 13,919.79 and 3,040.43 is: 4,560.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,279.76 : 13,919.79 = 3,040.43 : x
  2. Step 2: Convert to fraction form
    9,279.76/13,919.79 = 3,040.43/x
  3. Step 3: Cross multiply
    9,279.76x = 13,919.79 × 3,040.43
  4. Step 4: Simplify right side
    9,279.76x = 42,322,147.11
  5. Step 5: Solve for x
    x = 42,322,147.11/9,279.76
  6. Step 6: Final answer
    x = 4,560.69

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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.