Home / 2,182.80-3,012.91-1,299.20

Finding the Fourth Proportional to 2,182.80, 3,012.91 and 1,299.20

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Solution

The fourth proportional to 2,182.80, 3,012.91 and 1,299.20 is: 1,793.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,182.80 : 3,012.91 = 1,299.20 : x
  2. Step 2: Convert to fraction form
    2,182.80/3,012.91 = 1,299.20/x
  3. Step 3: Cross multiply
    2,182.80x = 3,012.91 × 1,299.20
  4. Step 4: Simplify right side
    2,182.80x = 3,914,361.67
  5. Step 5: Solve for x
    x = 3,914,361.67/2,182.80
  6. Step 6: Final answer
    x = 1,793.27

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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.