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Finding the Third Proportional to 4,617.56 and 9,891.56

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Solution

The third proportional to 4,617.56 and 9,891.56 is: 21,189.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,617.56 : 9,891.56 = 9,891.56 : x
  2. Step 2: Convert to fraction form
    4,617.56/9,891.56 = 9,891.56/x
  3. Step 3: Cross multiply
    4,617.56x = 9,891.56 × 9,891.56
  4. Step 4: Simplify right side
    4,617.56x = 97,843,008.69
  5. Step 5: Solve for x
    x = 97,843,008.69/4,617.56
  6. Step 6: Final answer
    x = 21,189.32

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.