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Finding the Third Proportional to 4,216 and 8,875

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Solution

The third proportional to 4,216 and 8,875 is: 18,682.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,216 : 8,875 = 8,875 : x
  2. Step 2: Convert to fraction form
    4,216/8,875 = 8,875/x
  3. Step 3: Cross multiply
    4,216x = 8,875 × 8,875
  4. Step 4: Simplify right side
    4,216x = 78,765,625
  5. Step 5: Solve for x
    x = 78,765,625/4,216
  6. Step 6: Final answer
    x = 18,682.55

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.