Home / 1,521.22-2,283.80-791.30

Finding the Fourth Proportional to 1,521.22, 2,283.80 and 791.30

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Solution

The fourth proportional to 1,521.22, 2,283.80 and 791.30 is: 1,187.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.22 : 2,283.80 = 791.30 : x
  2. Step 2: Convert to fraction form
    1,521.22/2,283.80 = 791.30/x
  3. Step 3: Cross multiply
    1,521.22x = 2,283.80 × 791.30
  4. Step 4: Simplify right side
    1,521.22x = 1,807,170.94
  5. Step 5: Solve for x
    x = 1,807,170.94/1,521.22
  6. Step 6: Final answer
    x = 1,187.97

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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.