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Finding the Fourth Proportional to 8,097.94, 12,138.79 and 2,828.86

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Solution

The fourth proportional to 8,097.94, 12,138.79 and 2,828.86 is: 4,240.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,097.94 : 12,138.79 = 2,828.86 : x
  2. Step 2: Convert to fraction form
    8,097.94/12,138.79 = 2,828.86/x
  3. Step 3: Cross multiply
    8,097.94x = 12,138.79 × 2,828.86
  4. Step 4: Simplify right side
    8,097.94x = 34,338,937.48
  5. Step 5: Solve for x
    x = 34,338,937.48/8,097.94
  6. Step 6: Final answer
    x = 4,240.45

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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.