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Finding the Fourth Proportional to 7,213.38, 9,954.46 and 3,901.38

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Solution

The fourth proportional to 7,213.38, 9,954.46 and 3,901.38 is: 5,383.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,213.38 : 9,954.46 = 3,901.38 : x
  2. Step 2: Convert to fraction form
    7,213.38/9,954.46 = 3,901.38/x
  3. Step 3: Cross multiply
    7,213.38x = 9,954.46 × 3,901.38
  4. Step 4: Simplify right side
    7,213.38x = 38,836,131.15
  5. Step 5: Solve for x
    x = 38,836,131.15/7,213.38
  6. Step 6: Final answer
    x = 5,383.90

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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.