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Finding the Third Proportional to 3,321 and 6,986.25

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Solution

The third proportional to 3,321 and 6,986.25 is: 14,696.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,321 : 6,986.25 = 6,986.25 : x
  2. Step 2: Convert to fraction form
    3,321/6,986.25 = 6,986.25/x
  3. Step 3: Cross multiply
    3,321x = 6,986.25 × 6,986.25
  4. Step 4: Simplify right side
    3,321x = 48,807,689.06
  5. Step 5: Solve for x
    x = 48,807,689.06/3,321
  6. Step 6: Final answer
    x = 14,696.68

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.