Home / 3,619.79-5,436.38-2,167.86

Finding the Fourth Proportional to 3,619.79, 5,436.38 and 2,167.86

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Solution

The fourth proportional to 3,619.79, 5,436.38 and 2,167.86 is: 3,255.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.79 : 5,436.38 = 2,167.86 : x
  2. Step 2: Convert to fraction form
    3,619.79/5,436.38 = 2,167.86/x
  3. Step 3: Cross multiply
    3,619.79x = 5,436.38 × 2,167.86
  4. Step 4: Simplify right side
    3,619.79x = 11,785,299.91
  5. Step 5: Solve for x
    x = 11,785,299.91/3,619.79
  6. Step 6: Final answer
    x = 3,255.80

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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.