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Finding the Third Proportional to 2,820 and 4,344

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Solution

The third proportional to 2,820 and 4,344 is: 6,691.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820 : 4,344 = 4,344 : x
  2. Step 2: Convert to fraction form
    2,820/4,344 = 4,344/x
  3. Step 3: Cross multiply
    2,820x = 4,344 × 4,344
  4. Step 4: Simplify right side
    2,820x = 18,870,336
  5. Step 5: Solve for x
    x = 18,870,336/2,820
  6. Step 6: Final answer
    x = 6,691.61

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.