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Finding the Third Proportional to 4,057.31 and 8,720.44

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Solution

The third proportional to 4,057.31 and 8,720.44 is: 18,742.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,057.31 : 8,720.44 = 8,720.44 : x
  2. Step 2: Convert to fraction form
    4,057.31/8,720.44 = 8,720.44/x
  3. Step 3: Cross multiply
    4,057.31x = 8,720.44 × 8,720.44
  4. Step 4: Simplify right side
    4,057.31x = 76,046,030.19
  5. Step 5: Solve for x
    x = 76,046,030.19/4,057.31
  6. Step 6: Final answer
    x = 18,742.96

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.