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Finding the Fourth Proportional to 8,611.02, 12,920.18 and 3,349.70

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Solution

The fourth proportional to 8,611.02, 12,920.18 and 3,349.70 is: 5,025.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,611.02 : 12,920.18 = 3,349.70 : x
  2. Step 2: Convert to fraction form
    8,611.02/12,920.18 = 3,349.70/x
  3. Step 3: Cross multiply
    8,611.02x = 12,920.18 × 3,349.70
  4. Step 4: Simplify right side
    8,611.02x = 43,278,694.05
  5. Step 5: Solve for x
    x = 43,278,694.05/8,611.02
  6. Step 6: Final answer
    x = 5,025.97

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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.