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Finding the Third Proportional to 2,021.63 and 4,216.13

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Solution

The third proportional to 2,021.63 and 4,216.13 is: 8,792.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.63 : 4,216.13 = 4,216.13 : x
  2. Step 2: Convert to fraction form
    2,021.63/4,216.13 = 4,216.13/x
  3. Step 3: Cross multiply
    2,021.63x = 4,216.13 × 4,216.13
  4. Step 4: Simplify right side
    2,021.63x = 17,775,710.02
  5. Step 5: Solve for x
    x = 17,775,710.02/2,021.63
  6. Step 6: Final answer
    x = 8,792.78

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.