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Finding the Fourth Proportional to 7,874.69, 11,809.04 and 2,608.11

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Solution

The fourth proportional to 7,874.69, 11,809.04 and 2,608.11 is: 3,911.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,874.69 : 11,809.04 = 2,608.11 : x
  2. Step 2: Convert to fraction form
    7,874.69/11,809.04 = 2,608.11/x
  3. Step 3: Cross multiply
    7,874.69x = 11,809.04 × 2,608.11
  4. Step 4: Simplify right side
    7,874.69x = 30,799,262.27
  5. Step 5: Solve for x
    x = 30,799,262.27/7,874.69
  6. Step 6: Final answer
    x = 3,911.17

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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.