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Finding the Fourth Proportional to 9,469, 13,067.30 and 5,278.12

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Solution

The fourth proportional to 9,469, 13,067.30 and 5,278.12 is: 7,283.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,469 : 13,067.30 = 5,278.12 : x
  2. Step 2: Convert to fraction form
    9,469/13,067.30 = 5,278.12/x
  3. Step 3: Cross multiply
    9,469x = 13,067.30 × 5,278.12
  4. Step 4: Simplify right side
    9,469x = 68,970,777.48
  5. Step 5: Solve for x
    x = 68,970,777.48/9,469
  6. Step 6: Final answer
    x = 7,283.85

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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.