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Finding the Fourth Proportional to 7,612.75, 11,420.03 and 3,229.63

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Solution

The fourth proportional to 7,612.75, 11,420.03 and 3,229.63 is: 4,844.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,612.75 : 11,420.03 = 3,229.63 : x
  2. Step 2: Convert to fraction form
    7,612.75/11,420.03 = 3,229.63/x
  3. Step 3: Cross multiply
    7,612.75x = 11,420.03 × 3,229.63
  4. Step 4: Simplify right side
    7,612.75x = 36,882,471.49
  5. Step 5: Solve for x
    x = 36,882,471.49/7,612.75
  6. Step 6: Final answer
    x = 4,844.83

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.