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Finding the Third Proportional to 3,428.25 and 7,214.25

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Solution

The third proportional to 3,428.25 and 7,214.25 is: 15,181.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.25 : 7,214.25 = 7,214.25 : x
  2. Step 2: Convert to fraction form
    3,428.25/7,214.25 = 7,214.25/x
  3. Step 3: Cross multiply
    3,428.25x = 7,214.25 × 7,214.25
  4. Step 4: Simplify right side
    3,428.25x = 52,045,403.06
  5. Step 5: Solve for x
    x = 52,045,403.06/3,428.25
  6. Step 6: Final answer
    x = 15,181.33

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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.