Home / 3,142.80-4,324.19-2,721.87

Finding the Fourth Proportional to 3,142.80, 4,324.19 and 2,721.87

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Solution

The fourth proportional to 3,142.80, 4,324.19 and 2,721.87 is: 3,745.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,142.80 : 4,324.19 = 2,721.87 : x
  2. Step 2: Convert to fraction form
    3,142.80/4,324.19 = 2,721.87/x
  3. Step 3: Cross multiply
    3,142.80x = 4,324.19 × 2,721.87
  4. Step 4: Simplify right side
    3,142.80x = 11,769,869.43
  5. Step 5: Solve for x
    x = 11,769,869.43/3,142.80
  6. Step 6: Final answer
    x = 3,745.03

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1.5x scale

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.