Home / 1,519.09-2,278.94-697.61

Finding the Fourth Proportional to 1,519.09, 2,278.94 and 697.61

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Solution

The fourth proportional to 1,519.09, 2,278.94 and 697.61 is: 1,046.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,519.09 : 2,278.94 = 697.61 : x
  2. Step 2: Convert to fraction form
    1,519.09/2,278.94 = 697.61/x
  3. Step 3: Cross multiply
    1,519.09x = 2,278.94 × 697.61
  4. Step 4: Simplify right side
    1,519.09x = 1,589,813.54
  5. Step 5: Solve for x
    x = 1,589,813.54/1,519.09
  6. Step 6: Final answer
    x = 1,046.56

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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.