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Finding the Third Proportional to 5,239.69 and 9,909.84

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Solution

The third proportional to 5,239.69 and 9,909.84 is: 18,742.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,239.69 : 9,909.84 = 9,909.84 : x
  2. Step 2: Convert to fraction form
    5,239.69/9,909.84 = 9,909.84/x
  3. Step 3: Cross multiply
    5,239.69x = 9,909.84 × 9,909.84
  4. Step 4: Simplify right side
    5,239.69x = 98,205,003.15
  5. Step 5: Solve for x
    x = 98,205,003.15/5,239.69
  6. Step 6: Final answer
    x = 18,742.53

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Why These Related Problems?

These problems maintain the same ratio (1.89) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.