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Finding the Third Proportional to 4,212 and 8,826

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Solution

The third proportional to 4,212 and 8,826 is: 18,494.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,212 : 8,826 = 8,826 : x
  2. Step 2: Convert to fraction form
    4,212/8,826 = 8,826/x
  3. Step 3: Cross multiply
    4,212x = 8,826 × 8,826
  4. Step 4: Simplify right side
    4,212x = 77,898,276
  5. Step 5: Solve for x
    x = 77,898,276/4,212
  6. Step 6: Final answer
    x = 18,494.37

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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.