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Finding the Fourth Proportional to 3,889.38, 5,835.30 and 2,965.98

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Solution

The fourth proportional to 3,889.38, 5,835.30 and 2,965.98 is: 4,449.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.38 : 5,835.30 = 2,965.98 : x
  2. Step 2: Convert to fraction form
    3,889.38/5,835.30 = 2,965.98/x
  3. Step 3: Cross multiply
    3,889.38x = 5,835.30 × 2,965.98
  4. Step 4: Simplify right side
    3,889.38x = 17,307,383.09
  5. Step 5: Solve for x
    x = 17,307,383.09/3,889.38
  6. Step 6: Final answer
    x = 4,449.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.