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Finding the Third Proportional to 4,455.84 and 9,900.56

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Solution

The third proportional to 4,455.84 and 9,900.56 is: 21,998.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,455.84 : 9,900.56 = 9,900.56 : x
  2. Step 2: Convert to fraction form
    4,455.84/9,900.56 = 9,900.56/x
  3. Step 3: Cross multiply
    4,455.84x = 9,900.56 × 9,900.56
  4. Step 4: Simplify right side
    4,455.84x = 98,021,137.82
  5. Step 5: Solve for x
    x = 98,021,137.82/4,455.84
  6. Step 6: Final answer
    x = 21,998.33

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.