Home / 8,619.28-12,922.34-3,936.04

Finding the Fourth Proportional to 8,619.28, 12,922.34 and 3,936.04

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Solution

The fourth proportional to 8,619.28, 12,922.34 and 3,936.04 is: 5,901.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.28 : 12,922.34 = 3,936.04 : x
  2. Step 2: Convert to fraction form
    8,619.28/12,922.34 = 3,936.04/x
  3. Step 3: Cross multiply
    8,619.28x = 12,922.34 × 3,936.04
  4. Step 4: Simplify right side
    8,619.28x = 50,862,770.92
  5. Step 5: Solve for x
    x = 50,862,770.92/8,619.28
  6. Step 6: Final answer
    x = 5,901.05

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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.