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Finding the Fourth Proportional to 9,353.05, 12,906.06 and 5,161.30

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Solution

The fourth proportional to 9,353.05, 12,906.06 and 5,161.30 is: 7,121.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,353.05 : 12,906.06 = 5,161.30 : x
  2. Step 2: Convert to fraction form
    9,353.05/12,906.06 = 5,161.30/x
  3. Step 3: Cross multiply
    9,353.05x = 12,906.06 × 5,161.30
  4. Step 4: Simplify right side
    9,353.05x = 66,612,047.48
  5. Step 5: Solve for x
    x = 66,612,047.48/9,353.05
  6. Step 6: Final answer
    x = 7,121.96

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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.