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Finding the Fourth Proportional to 3,982.38, 5,975.09 and 1,485.09

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Solution

The fourth proportional to 3,982.38, 5,975.09 and 1,485.09 is: 2,228.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982.38 : 5,975.09 = 1,485.09 : x
  2. Step 2: Convert to fraction form
    3,982.38/5,975.09 = 1,485.09/x
  3. Step 3: Cross multiply
    3,982.38x = 5,975.09 × 1,485.09
  4. Step 4: Simplify right side
    3,982.38x = 8,873,546.41
  5. Step 5: Solve for x
    x = 8,873,546.41/3,982.38
  6. Step 6: Final answer
    x = 2,228.20

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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.