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Finding the Fourth Proportional to 7,916, 11,874 and 3,299

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Solution

The fourth proportional to 7,916, 11,874 and 3,299 is: 4,948.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,916 : 11,874 = 3,299 : x
  2. Step 2: Convert to fraction form
    7,916/11,874 = 3,299/x
  3. Step 3: Cross multiply
    7,916x = 11,874 × 3,299
  4. Step 4: Simplify right side
    7,916x = 39,172,326
  5. Step 5: Solve for x
    x = 39,172,326/7,916
  6. Step 6: Final answer
    x = 4,948.50

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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.