Home / 3,128.77-4,687.96-2,202.38

Finding the Fourth Proportional to 3,128.77, 4,687.96 and 2,202.38

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Solution

The fourth proportional to 3,128.77, 4,687.96 and 2,202.38 is: 3,299.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.77 : 4,687.96 = 2,202.38 : x
  2. Step 2: Convert to fraction form
    3,128.77/4,687.96 = 2,202.38/x
  3. Step 3: Cross multiply
    3,128.77x = 4,687.96 × 2,202.38
  4. Step 4: Simplify right side
    3,128.77x = 10,324,669.34
  5. Step 5: Solve for x
    x = 10,324,669.34/3,128.77
  6. Step 6: Final answer
    x = 3,299.91

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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.