Home / 1,521.18-2,282.31-791.24

Finding the Fourth Proportional to 1,521.18, 2,282.31 and 791.24

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Solution

The fourth proportional to 1,521.18, 2,282.31 and 791.24 is: 1,187.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.18 : 2,282.31 = 791.24 : x
  2. Step 2: Convert to fraction form
    1,521.18/2,282.31 = 791.24/x
  3. Step 3: Cross multiply
    1,521.18x = 2,282.31 × 791.24
  4. Step 4: Simplify right side
    1,521.18x = 1,805,843.55
  5. Step 5: Solve for x
    x = 1,805,843.55/1,521.18
  6. Step 6: Final answer
    x = 1,187.13

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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.