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Finding the Third Proportional to 3,570 and 8,205

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Solution

The third proportional to 3,570 and 8,205 is: 18,857.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,570 : 8,205 = 8,205 : x
  2. Step 2: Convert to fraction form
    3,570/8,205 = 8,205/x
  3. Step 3: Cross multiply
    3,570x = 8,205 × 8,205
  4. Step 4: Simplify right side
    3,570x = 67,322,025
  5. Step 5: Solve for x
    x = 67,322,025/3,570
  6. Step 6: Final answer
    x = 18,857.71

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Why These Related Problems?

These problems maintain the same ratio (2.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.