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Finding the Third Proportional to 2,800 and 7,276

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Solution

The third proportional to 2,800 and 7,276 is: 18,907.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800 : 7,276 = 7,276 : x
  2. Step 2: Convert to fraction form
    2,800/7,276 = 7,276/x
  3. Step 3: Cross multiply
    2,800x = 7,276 × 7,276
  4. Step 4: Simplify right side
    2,800x = 52,940,176
  5. Step 5: Solve for x
    x = 52,940,176/2,800
  6. Step 6: Final answer
    x = 18,907.21

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Why These Related Problems?

These problems maintain the same ratio (2.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.