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Finding the Third Proportional to 4,479.75 and 9,756

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Solution

The third proportional to 4,479.75 and 9,756 is: 21,246.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,479.75 : 9,756 = 9,756 : x
  2. Step 2: Convert to fraction form
    4,479.75/9,756 = 9,756/x
  3. Step 3: Cross multiply
    4,479.75x = 9,756 × 9,756
  4. Step 4: Simplify right side
    4,479.75x = 95,179,536
  5. Step 5: Solve for x
    x = 95,179,536/4,479.75
  6. Step 6: Final answer
    x = 21,246.62

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.