Home / 1,821.22-2,733.50-1,129.24

Finding the Fourth Proportional to 1,821.22, 2,733.50 and 1,129.24

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Solution

The fourth proportional to 1,821.22, 2,733.50 and 1,129.24 is: 1,694.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.22 : 2,733.50 = 1,129.24 : x
  2. Step 2: Convert to fraction form
    1,821.22/2,733.50 = 1,129.24/x
  3. Step 3: Cross multiply
    1,821.22x = 2,733.50 × 1,129.24
  4. Step 4: Simplify right side
    1,821.22x = 3,086,777.54
  5. Step 5: Solve for x
    x = 3,086,777.54/1,821.22
  6. Step 6: Final answer
    x = 1,694.90

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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.