Home / 2,791.38-3,847.99-2,127.08

Finding the Fourth Proportional to 2,791.38, 3,847.99 and 2,127.08

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Solution

The fourth proportional to 2,791.38, 3,847.99 and 2,127.08 is: 2,932.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.38 : 3,847.99 = 2,127.08 : x
  2. Step 2: Convert to fraction form
    2,791.38/3,847.99 = 2,127.08/x
  3. Step 3: Cross multiply
    2,791.38x = 3,847.99 × 2,127.08
  4. Step 4: Simplify right side
    2,791.38x = 8,184,982.57
  5. Step 5: Solve for x
    x = 8,184,982.57/2,791.38
  6. Step 6: Final answer
    x = 2,932.24

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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.