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Finding the Fourth Proportional to 8,321.92, 12,491.52 and 6,133.12

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Solution

The fourth proportional to 8,321.92, 12,491.52 and 6,133.12 is: 9,206.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,321.92 : 12,491.52 = 6,133.12 : x
  2. Step 2: Convert to fraction form
    8,321.92/12,491.52 = 6,133.12/x
  3. Step 3: Cross multiply
    8,321.92x = 12,491.52 × 6,133.12
  4. Step 4: Simplify right side
    8,321.92x = 76,611,991.14
  5. Step 5: Solve for x
    x = 76,611,991.14/8,321.92
  6. Step 6: Final answer
    x = 9,206.05

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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.