Home / 2,115.49-3,171.21-883.75

Finding the Fourth Proportional to 2,115.49, 3,171.21 and 883.75

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Solution

The fourth proportional to 2,115.49, 3,171.21 and 883.75 is: 1,324.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.49 : 3,171.21 = 883.75 : x
  2. Step 2: Convert to fraction form
    2,115.49/3,171.21 = 883.75/x
  3. Step 3: Cross multiply
    2,115.49x = 3,171.21 × 883.75
  4. Step 4: Simplify right side
    2,115.49x = 2,802,556.84
  5. Step 5: Solve for x
    x = 2,802,556.84/2,115.49
  6. Step 6: Final answer
    x = 1,324.78

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1.5x scale

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.