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Finding the Third Proportional to 4,039.88 and 5,455.69

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Solution

The third proportional to 4,039.88 and 5,455.69 is: 7,367.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,039.88 : 5,455.69 = 5,455.69 : x
  2. Step 2: Convert to fraction form
    4,039.88/5,455.69 = 5,455.69/x
  3. Step 3: Cross multiply
    4,039.88x = 5,455.69 × 5,455.69
  4. Step 4: Simplify right side
    4,039.88x = 29,764,526.10
  5. Step 5: Solve for x
    x = 29,764,526.10/4,039.88
  6. Step 6: Final answer
    x = 7,367.68

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.