Home / 1,861.67-2,791.44-1,439.37

Finding the Fourth Proportional to 1,861.67, 2,791.44 and 1,439.37

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Solution

The fourth proportional to 1,861.67, 2,791.44 and 1,439.37 is: 2,158.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.67 : 2,791.44 = 1,439.37 : x
  2. Step 2: Convert to fraction form
    1,861.67/2,791.44 = 1,439.37/x
  3. Step 3: Cross multiply
    1,861.67x = 2,791.44 × 1,439.37
  4. Step 4: Simplify right side
    1,861.67x = 4,017,914.99
  5. Step 5: Solve for x
    x = 4,017,914.99/1,861.67
  6. Step 6: Final answer
    x = 2,158.23

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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.