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Finding the Third Proportional to 2,209.78 and 4,692.94

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Solution

The third proportional to 2,209.78 and 4,692.94 is: 9,966.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,209.78 : 4,692.94 = 4,692.94 : x
  2. Step 2: Convert to fraction form
    2,209.78/4,692.94 = 4,692.94/x
  3. Step 3: Cross multiply
    2,209.78x = 4,692.94 × 4,692.94
  4. Step 4: Simplify right side
    2,209.78x = 22,023,662.38
  5. Step 5: Solve for x
    x = 22,023,662.38/2,209.78
  6. Step 6: Final answer
    x = 9,966.44

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.