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Finding the Third Proportional to 5,308.88 and 8,408.81

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Solution

The third proportional to 5,308.88 and 8,408.81 is: 13,318.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,308.88 : 8,408.81 = 8,408.81 : x
  2. Step 2: Convert to fraction form
    5,308.88/8,408.81 = 8,408.81/x
  3. Step 3: Cross multiply
    5,308.88x = 8,408.81 × 8,408.81
  4. Step 4: Simplify right side
    5,308.88x = 70,708,127.66
  5. Step 5: Solve for x
    x = 70,708,127.66/5,308.88
  6. Step 6: Final answer
    x = 13,318.85

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.