Home / 2,853.92-3,938.68-1,791.86

Finding the Fourth Proportional to 2,853.92, 3,938.68 and 1,791.86

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Solution

The fourth proportional to 2,853.92, 3,938.68 and 1,791.86 is: 2,472.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,853.92 : 3,938.68 = 1,791.86 : x
  2. Step 2: Convert to fraction form
    2,853.92/3,938.68 = 1,791.86/x
  3. Step 3: Cross multiply
    2,853.92x = 3,938.68 × 1,791.86
  4. Step 4: Simplify right side
    2,853.92x = 7,057,563.14
  5. Step 5: Solve for x
    x = 7,057,563.14/2,853.92
  6. Step 6: Final answer
    x = 2,472.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.