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Finding the Fourth Proportional to 8,611.74, 12,917.43 and 2,371.73

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Solution

The fourth proportional to 8,611.74, 12,917.43 and 2,371.73 is: 3,557.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,611.74 : 12,917.43 = 2,371.73 : x
  2. Step 2: Convert to fraction form
    8,611.74/12,917.43 = 2,371.73/x
  3. Step 3: Cross multiply
    8,611.74x = 12,917.43 × 2,371.73
  4. Step 4: Simplify right side
    8,611.74x = 30,636,591.67
  5. Step 5: Solve for x
    x = 30,636,591.67/8,611.74
  6. Step 6: Final answer
    x = 3,557.54

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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.