Home / 1,942.25-2,910.13-1,391.65

Finding the Fourth Proportional to 1,942.25, 2,910.13 and 1,391.65

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Solution

The fourth proportional to 1,942.25, 2,910.13 and 1,391.65 is: 2,085.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.25 : 2,910.13 = 1,391.65 : x
  2. Step 2: Convert to fraction form
    1,942.25/2,910.13 = 1,391.65/x
  3. Step 3: Cross multiply
    1,942.25x = 2,910.13 × 1,391.65
  4. Step 4: Simplify right side
    1,942.25x = 4,049,871.66
  5. Step 5: Solve for x
    x = 4,049,871.66/1,942.25
  6. Step 6: Final answer
    x = 2,085.15

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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.