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Finding the Third Proportional to 5,383.13 and 8,290.69

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Solution

The third proportional to 5,383.13 and 8,290.69 is: 12,768.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,383.13 : 8,290.69 = 8,290.69 : x
  2. Step 2: Convert to fraction form
    5,383.13/8,290.69 = 8,290.69/x
  3. Step 3: Cross multiply
    5,383.13x = 8,290.69 × 8,290.69
  4. Step 4: Simplify right side
    5,383.13x = 68,735,499.22
  5. Step 5: Solve for x
    x = 68,735,499.22/5,383.13
  6. Step 6: Final answer
    x = 12,768.70

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.