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Finding the Third Proportional to 4,945.50 and 11,871

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Solution

The third proportional to 4,945.50 and 11,871 is: 28,494.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,945.50 : 11,871 = 11,871 : x
  2. Step 2: Convert to fraction form
    4,945.50/11,871 = 11,871/x
  3. Step 3: Cross multiply
    4,945.50x = 11,871 × 11,871
  4. Step 4: Simplify right side
    4,945.50x = 140,920,641
  5. Step 5: Solve for x
    x = 140,920,641/4,945.50
  6. Step 6: Final answer
    x = 28,494.72

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Why These Related Problems?

These problems maintain the same ratio (2.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.