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Finding the Third Proportional to 4,815 and 7,631

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Solution

The third proportional to 4,815 and 7,631 is: 12,093.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,815 : 7,631 = 7,631 : x
  2. Step 2: Convert to fraction form
    4,815/7,631 = 7,631/x
  3. Step 3: Cross multiply
    4,815x = 7,631 × 7,631
  4. Step 4: Simplify right side
    4,815x = 58,232,161
  5. Step 5: Solve for x
    x = 58,232,161/4,815
  6. Step 6: Final answer
    x = 12,093.91

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.