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Finding the Fourth Proportional to 8,157.62, 12,238.23 and 2,611.42

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Solution

The fourth proportional to 8,157.62, 12,238.23 and 2,611.42 is: 3,917.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,157.62 : 12,238.23 = 2,611.42 : x
  2. Step 2: Convert to fraction form
    8,157.62/12,238.23 = 2,611.42/x
  3. Step 3: Cross multiply
    8,157.62x = 12,238.23 × 2,611.42
  4. Step 4: Simplify right side
    8,157.62x = 31,959,097.40
  5. Step 5: Solve for x
    x = 31,959,097.40/8,157.62
  6. Step 6: Final answer
    x = 3,917.70

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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.