Home / 1,821.97-2,732.32-1,127.58

Finding the Fourth Proportional to 1,821.97, 2,732.32 and 1,127.58

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Solution

The fourth proportional to 1,821.97, 2,732.32 and 1,127.58 is: 1,690.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.97 : 2,732.32 = 1,127.58 : x
  2. Step 2: Convert to fraction form
    1,821.97/2,732.32 = 1,127.58/x
  3. Step 3: Cross multiply
    1,821.97x = 2,732.32 × 1,127.58
  4. Step 4: Simplify right side
    1,821.97x = 3,080,909.39
  5. Step 5: Solve for x
    x = 3,080,909.39/1,821.97
  6. Step 6: Final answer
    x = 1,690.98

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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.