Home / 3,187.81-4,396.83-1,861.43

Finding the Fourth Proportional to 3,187.81, 4,396.83 and 1,861.43

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Solution

The fourth proportional to 3,187.81, 4,396.83 and 1,861.43 is: 2,567.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.81 : 4,396.83 = 1,861.43 : x
  2. Step 2: Convert to fraction form
    3,187.81/4,396.83 = 1,861.43/x
  3. Step 3: Cross multiply
    3,187.81x = 4,396.83 × 1,861.43
  4. Step 4: Simplify right side
    3,187.81x = 8,184,391.27
  5. Step 5: Solve for x
    x = 8,184,391.27/3,187.81
  6. Step 6: Final answer
    x = 2,567.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.