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Finding the Fourth Proportional to 3,899.97, 5,850.99 and 1,126.89

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Solution

The fourth proportional to 3,899.97, 5,850.99 and 1,126.89 is: 1,690.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,899.97 : 5,850.99 = 1,126.89 : x
  2. Step 2: Convert to fraction form
    3,899.97/5,850.99 = 1,126.89/x
  3. Step 3: Cross multiply
    3,899.97x = 5,850.99 × 1,126.89
  4. Step 4: Simplify right side
    3,899.97x = 6,593,422.12
  5. Step 5: Solve for x
    x = 6,593,422.12/3,899.97
  6. Step 6: Final answer
    x = 1,690.63

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Double scale
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Similar ratio
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1.5x scale

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.