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Finding the Fourth Proportional to 3,895.57, 5,375.90 and 2,127.29

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Solution

The fourth proportional to 3,895.57, 5,375.90 and 2,127.29 is: 2,935.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,895.57 : 5,375.90 = 2,127.29 : x
  2. Step 2: Convert to fraction form
    3,895.57/5,375.90 = 2,127.29/x
  3. Step 3: Cross multiply
    3,895.57x = 5,375.90 × 2,127.29
  4. Step 4: Simplify right side
    3,895.57x = 11,436,098.31
  5. Step 5: Solve for x
    x = 11,436,098.31/3,895.57
  6. Step 6: Final answer
    x = 2,935.67

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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.