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Finding the Fourth Proportional to 8,757.76, 13,136.84 and 2,914.84

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Solution

The fourth proportional to 8,757.76, 13,136.84 and 2,914.84 is: 4,372.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.76 : 13,136.84 = 2,914.84 : x
  2. Step 2: Convert to fraction form
    8,757.76/13,136.84 = 2,914.84/x
  3. Step 3: Cross multiply
    8,757.76x = 13,136.84 × 2,914.84
  4. Step 4: Simplify right side
    8,757.76x = 38,291,786.71
  5. Step 5: Solve for x
    x = 38,291,786.71/8,757.76
  6. Step 6: Final answer
    x = 4,372.33

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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.