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Finding the Third Proportional to 3,209.50 and 6,986

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Solution

The third proportional to 3,209.50 and 6,986 is: 15,206.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,209.50 : 6,986 = 6,986 : x
  2. Step 2: Convert to fraction form
    3,209.50/6,986 = 6,986/x
  3. Step 3: Cross multiply
    3,209.50x = 6,986 × 6,986
  4. Step 4: Simplify right side
    3,209.50x = 48,804,196
  5. Step 5: Solve for x
    x = 48,804,196/3,209.50
  6. Step 6: Final answer
    x = 15,206.17

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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.