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Finding the Fourth Proportional to 12,380.52, 17,085 and 6,791.52

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Solution

The fourth proportional to 12,380.52, 17,085 and 6,791.52 is: 9,372.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,380.52 : 17,085 = 6,791.52 : x
  2. Step 2: Convert to fraction form
    12,380.52/17,085 = 6,791.52/x
  3. Step 3: Cross multiply
    12,380.52x = 17,085 × 6,791.52
  4. Step 4: Simplify right side
    12,380.52x = 116,033,119.20
  5. Step 5: Solve for x
    x = 116,033,119.20/12,380.52
  6. Step 6: Final answer
    x = 9,372.23

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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.