Home / 2,791.42-3,853.58-2,160.52

Finding the Fourth Proportional to 2,791.42, 3,853.58 and 2,160.52

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Solution

The fourth proportional to 2,791.42, 3,853.58 and 2,160.52 is: 2,982.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.42 : 3,853.58 = 2,160.52 : x
  2. Step 2: Convert to fraction form
    2,791.42/3,853.58 = 2,160.52/x
  3. Step 3: Cross multiply
    2,791.42x = 3,853.58 × 2,160.52
  4. Step 4: Simplify right side
    2,791.42x = 8,325,736.66
  5. Step 5: Solve for x
    x = 8,325,736.66/2,791.42
  6. Step 6: Final answer
    x = 2,982.62

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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.