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Finding the Third Proportional to 2,379 and 5,220.75

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Solution

The third proportional to 2,379 and 5,220.75 is: 11,457.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379 : 5,220.75 = 5,220.75 : x
  2. Step 2: Convert to fraction form
    2,379/5,220.75 = 5,220.75/x
  3. Step 3: Cross multiply
    2,379x = 5,220.75 × 5,220.75
  4. Step 4: Simplify right side
    2,379x = 27,256,230.56
  5. Step 5: Solve for x
    x = 27,256,230.56/2,379
  6. Step 6: Final answer
    x = 11,457.01

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.