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Finding the Fourth Proportional to 3,900.07, 5,850.11 and 1,951.21

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Solution

The fourth proportional to 3,900.07, 5,850.11 and 1,951.21 is: 2,926.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.07 : 5,850.11 = 1,951.21 : x
  2. Step 2: Convert to fraction form
    3,900.07/5,850.11 = 1,951.21/x
  3. Step 3: Cross multiply
    3,900.07x = 5,850.11 × 1,951.21
  4. Step 4: Simplify right side
    3,900.07x = 11,414,793.13
  5. Step 5: Solve for x
    x = 11,414,793.13/3,900.07
  6. Step 6: Final answer
    x = 2,926.82

Related Problems

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Half scale
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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.