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Finding the Third Proportional to 2,200 and 4,790

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Solution

The third proportional to 2,200 and 4,790 is: 10,429.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,200 : 4,790 = 4,790 : x
  2. Step 2: Convert to fraction form
    2,200/4,790 = 4,790/x
  3. Step 3: Cross multiply
    2,200x = 4,790 × 4,790
  4. Step 4: Simplify right side
    2,200x = 22,944,100
  5. Step 5: Solve for x
    x = 22,944,100/2,200
  6. Step 6: Final answer
    x = 10,429.14

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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.