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Finding the Fourth Proportional to 3,899.95, 5,850.02 and 1,126.71

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Solution

The fourth proportional to 3,899.95, 5,850.02 and 1,126.71 is: 1,690.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,899.95 : 5,850.02 = 1,126.71 : x
  2. Step 2: Convert to fraction form
    3,899.95/5,850.02 = 1,126.71/x
  3. Step 3: Cross multiply
    3,899.95x = 5,850.02 × 1,126.71
  4. Step 4: Simplify right side
    3,899.95x = 6,591,278.85
  5. Step 5: Solve for x
    x = 6,591,278.85/3,899.95
  6. Step 6: Final answer
    x = 1,690.09

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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.