Home / 3,942.83-5,911.28-1,861.61

Finding the Fourth Proportional to 3,942.83, 5,911.28 and 1,861.61

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Solution

The fourth proportional to 3,942.83, 5,911.28 and 1,861.61 is: 2,791.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.83 : 5,911.28 = 1,861.61 : x
  2. Step 2: Convert to fraction form
    3,942.83/5,911.28 = 1,861.61/x
  3. Step 3: Cross multiply
    3,942.83x = 5,911.28 × 1,861.61
  4. Step 4: Simplify right side
    3,942.83x = 11,004,482.70
  5. Step 5: Solve for x
    x = 11,004,482.70/3,942.83
  6. Step 6: Final answer
    x = 2,791.01

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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.