Home / 1,942.42-2,908.77-1,291.18

Finding the Fourth Proportional to 1,942.42, 2,908.77 and 1,291.18

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Solution

The fourth proportional to 1,942.42, 2,908.77 and 1,291.18 is: 1,933.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.42 : 2,908.77 = 1,291.18 : x
  2. Step 2: Convert to fraction form
    1,942.42/2,908.77 = 1,291.18/x
  3. Step 3: Cross multiply
    1,942.42x = 2,908.77 × 1,291.18
  4. Step 4: Simplify right side
    1,942.42x = 3,755,745.65
  5. Step 5: Solve for x
    x = 3,755,745.65/1,942.42
  6. Step 6: Final answer
    x = 1,933.54

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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.