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Finding the Fourth Proportional to 8,611.71, 12,918.77 and 3,063.41

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Solution

The fourth proportional to 8,611.71, 12,918.77 and 3,063.41 is: 4,595.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,611.71 : 12,918.77 = 3,063.41 : x
  2. Step 2: Convert to fraction form
    8,611.71/12,918.77 = 3,063.41/x
  3. Step 3: Cross multiply
    8,611.71x = 12,918.77 × 3,063.41
  4. Step 4: Simplify right side
    8,611.71x = 39,575,489.21
  5. Step 5: Solve for x
    x = 39,575,489.21/8,611.71
  6. Step 6: Final answer
    x = 4,595.54

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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.