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Finding the Fourth Proportional to 2,791.90, 3,853.02 and 2,127.52

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Solution

The fourth proportional to 2,791.90, 3,853.02 and 2,127.52 is: 2,936.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.90 : 3,853.02 = 2,127.52 : x
  2. Step 2: Convert to fraction form
    2,791.90/3,853.02 = 2,127.52/x
  3. Step 3: Cross multiply
    2,791.90x = 3,853.02 × 2,127.52
  4. Step 4: Simplify right side
    2,791.90x = 8,197,377.11
  5. Step 5: Solve for x
    x = 8,197,377.11/2,791.90
  6. Step 6: Final answer
    x = 2,936.13

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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.