Home / 8,120.44-12,172.02-3,439.48

Finding the Fourth Proportional to 8,120.44, 12,172.02 and 3,439.48

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Solution

The fourth proportional to 8,120.44, 12,172.02 and 3,439.48 is: 5,155.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.44 : 12,172.02 = 3,439.48 : x
  2. Step 2: Convert to fraction form
    8,120.44/12,172.02 = 3,439.48/x
  3. Step 3: Cross multiply
    8,120.44x = 12,172.02 × 3,439.48
  4. Step 4: Simplify right side
    8,120.44x = 41,865,419.35
  5. Step 5: Solve for x
    x = 41,865,419.35/8,120.44
  6. Step 6: Final answer
    x = 5,155.56

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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.