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Finding the Fourth Proportional to 8,085.47, 12,134.70 and 4,190.99

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Solution

The fourth proportional to 8,085.47, 12,134.70 and 4,190.99 is: 6,289.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,085.47 : 12,134.70 = 4,190.99 : x
  2. Step 2: Convert to fraction form
    8,085.47/12,134.70 = 4,190.99/x
  3. Step 3: Cross multiply
    8,085.47x = 12,134.70 × 4,190.99
  4. Step 4: Simplify right side
    8,085.47x = 50,856,406.35
  5. Step 5: Solve for x
    x = 50,856,406.35/8,085.47
  6. Step 6: Final answer
    x = 6,289.85

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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.