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Finding the Fourth Proportional to 8,136.55, 12,186.37 and 5,174.99

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Solution

The fourth proportional to 8,136.55, 12,186.37 and 5,174.99 is: 7,750.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,136.55 : 12,186.37 = 5,174.99 : x
  2. Step 2: Convert to fraction form
    8,136.55/12,186.37 = 5,174.99/x
  3. Step 3: Cross multiply
    8,136.55x = 12,186.37 × 5,174.99
  4. Step 4: Simplify right side
    8,136.55x = 63,064,348.68
  5. Step 5: Solve for x
    x = 63,064,348.68/8,136.55
  6. Step 6: Final answer
    x = 7,750.75

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.