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Finding the Third Proportional to 4,980 and 6,822

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Solution

The third proportional to 4,980 and 6,822 is: 9,345.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,980 : 6,822 = 6,822 : x
  2. Step 2: Convert to fraction form
    4,980/6,822 = 6,822/x
  3. Step 3: Cross multiply
    4,980x = 6,822 × 6,822
  4. Step 4: Simplify right side
    4,980x = 46,539,684
  5. Step 5: Solve for x
    x = 46,539,684/4,980
  6. Step 6: Final answer
    x = 9,345.32

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.