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Finding the Third Proportional to 992.31 and 2,179.19

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Solution

The third proportional to 992.31 and 2,179.19 is: 4,785.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    992.31 : 2,179.19 = 2,179.19 : x
  2. Step 2: Convert to fraction form
    992.31/2,179.19 = 2,179.19/x
  3. Step 3: Cross multiply
    992.31x = 2,179.19 × 2,179.19
  4. Step 4: Simplify right side
    992.31x = 4,748,858.16
  5. Step 5: Solve for x
    x = 4,748,858.16/992.31
  6. Step 6: Final answer
    x = 4,785.65

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.