Home / 1,821.24-2,731.92-1,127.44

Finding the Fourth Proportional to 1,821.24, 2,731.92 and 1,127.44

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Solution

The fourth proportional to 1,821.24, 2,731.92 and 1,127.44 is: 1,691.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.24 : 2,731.92 = 1,127.44 : x
  2. Step 2: Convert to fraction form
    1,821.24/2,731.92 = 1,127.44/x
  3. Step 3: Cross multiply
    1,821.24x = 2,731.92 × 1,127.44
  4. Step 4: Simplify right side
    1,821.24x = 3,080,075.88
  5. Step 5: Solve for x
    x = 3,080,075.88/1,821.24
  6. Step 6: Final answer
    x = 1,691.20

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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.