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Finding the Fourth Proportional to 3,982.68, 5,976.36 and 3,555

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Solution

The fourth proportional to 3,982.68, 5,976.36 and 3,555 is: 5,334.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982.68 : 5,976.36 = 3,555 : x
  2. Step 2: Convert to fraction form
    3,982.68/5,976.36 = 3,555/x
  3. Step 3: Cross multiply
    3,982.68x = 5,976.36 × 3,555
  4. Step 4: Simplify right side
    3,982.68x = 21,245,959.80
  5. Step 5: Solve for x
    x = 21,245,959.80/3,982.68
  6. Step 6: Final answer
    x = 5,334.59

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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.