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Finding the Fourth Proportional to 3,990.18, 5,982.92 and 1,525.18

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Solution

The fourth proportional to 3,990.18, 5,982.92 and 1,525.18 is: 2,286.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.18 : 5,982.92 = 1,525.18 : x
  2. Step 2: Convert to fraction form
    3,990.18/5,982.92 = 1,525.18/x
  3. Step 3: Cross multiply
    3,990.18x = 5,982.92 × 1,525.18
  4. Step 4: Simplify right side
    3,990.18x = 9,125,029.93
  5. Step 5: Solve for x
    x = 9,125,029.93/3,990.18
  6. Step 6: Final answer
    x = 2,286.87

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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.