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Finding the Fourth Proportional to 3,841.85, 5,755.21 and 1,994.17

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Solution

The fourth proportional to 3,841.85, 5,755.21 and 1,994.17 is: 2,987.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,841.85 : 5,755.21 = 1,994.17 : x
  2. Step 2: Convert to fraction form
    3,841.85/5,755.21 = 1,994.17/x
  3. Step 3: Cross multiply
    3,841.85x = 5,755.21 × 1,994.17
  4. Step 4: Simplify right side
    3,841.85x = 11,476,867.13
  5. Step 5: Solve for x
    x = 11,476,867.13/3,841.85
  6. Step 6: Final answer
    x = 2,987.33

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Double scale
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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.