Home / 1,519.31-2,279.11-697.82

Finding the Fourth Proportional to 1,519.31, 2,279.11 and 697.82

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Solution

The fourth proportional to 1,519.31, 2,279.11 and 697.82 is: 1,046.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,519.31 : 2,279.11 = 697.82 : x
  2. Step 2: Convert to fraction form
    1,519.31/2,279.11 = 697.82/x
  3. Step 3: Cross multiply
    1,519.31x = 2,279.11 × 697.82
  4. Step 4: Simplify right side
    1,519.31x = 1,590,398.67
  5. Step 5: Solve for x
    x = 1,590,398.67/1,519.31
  6. Step 6: Final answer
    x = 1,046.79

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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.