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Finding the Third Proportional to 1,565 and 3,408.25

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Solution

The third proportional to 1,565 and 3,408.25 is: 7,422.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,565 : 3,408.25 = 3,408.25 : x
  2. Step 2: Convert to fraction form
    1,565/3,408.25 = 3,408.25/x
  3. Step 3: Cross multiply
    1,565x = 3,408.25 × 3,408.25
  4. Step 4: Simplify right side
    1,565x = 11,616,168.06
  5. Step 5: Solve for x
    x = 11,616,168.06/1,565
  6. Step 6: Final answer
    x = 7,422.47

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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.