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Finding the Fourth Proportional to 3,895.03, 5,375.16 and 2,126.64

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Solution

The fourth proportional to 3,895.03, 5,375.16 and 2,126.64 is: 2,934.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,895.03 : 5,375.16 = 2,126.64 : x
  2. Step 2: Convert to fraction form
    3,895.03/5,375.16 = 2,126.64/x
  3. Step 3: Cross multiply
    3,895.03x = 5,375.16 × 2,126.64
  4. Step 4: Simplify right side
    3,895.03x = 11,431,050.42
  5. Step 5: Solve for x
    x = 11,431,050.42/3,895.03
  6. Step 6: Final answer
    x = 2,934.78

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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.