Home / 3,180.62-4,772.80-1,331.58

Finding the Fourth Proportional to 3,180.62, 4,772.80 and 1,331.58

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Solution

The fourth proportional to 3,180.62, 4,772.80 and 1,331.58 is: 1,998.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.62 : 4,772.80 = 1,331.58 : x
  2. Step 2: Convert to fraction form
    3,180.62/4,772.80 = 1,331.58/x
  3. Step 3: Cross multiply
    3,180.62x = 4,772.80 × 1,331.58
  4. Step 4: Simplify right side
    3,180.62x = 6,355,365.02
  5. Step 5: Solve for x
    x = 6,355,365.02/3,180.62
  6. Step 6: Final answer
    x = 1,998.15

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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.