Home / 1,231.92-1,849.20-1,185.24

Finding the Fourth Proportional to 1,231.92, 1,849.20 and 1,185.24

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Solution

The fourth proportional to 1,231.92, 1,849.20 and 1,185.24 is: 1,779.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231.92 : 1,849.20 = 1,185.24 : x
  2. Step 2: Convert to fraction form
    1,231.92/1,849.20 = 1,185.24/x
  3. Step 3: Cross multiply
    1,231.92x = 1,849.20 × 1,185.24
  4. Step 4: Simplify right side
    1,231.92x = 2,191,745.81
  5. Step 5: Solve for x
    x = 2,191,745.81/1,231.92
  6. Step 6: Final answer
    x = 1,779.13

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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.