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Finding the Fourth Proportional to 3,992.77, 5,515.03 and 3,365.38

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Solution

The fourth proportional to 3,992.77, 5,515.03 and 3,365.38 is: 4,648.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.77 : 5,515.03 = 3,365.38 : x
  2. Step 2: Convert to fraction form
    3,992.77/5,515.03 = 3,365.38/x
  3. Step 3: Cross multiply
    3,992.77x = 5,515.03 × 3,365.38
  4. Step 4: Simplify right side
    3,992.77x = 18,560,171.66
  5. Step 5: Solve for x
    x = 18,560,171.66/3,992.77
  6. Step 6: Final answer
    x = 4,648.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.