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Finding the Fourth Proportional to 9,238.53, 12,747.78 and 5,204.79

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Solution

The fourth proportional to 9,238.53, 12,747.78 and 5,204.79 is: 7,181.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,238.53 : 12,747.78 = 5,204.79 : x
  2. Step 2: Convert to fraction form
    9,238.53/12,747.78 = 5,204.79/x
  3. Step 3: Cross multiply
    9,238.53x = 12,747.78 × 5,204.79
  4. Step 4: Simplify right side
    9,238.53x = 66,349,517.87
  5. Step 5: Solve for x
    x = 66,349,517.87/9,238.53
  6. Step 6: Final answer
    x = 7,181.83

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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.