Home / 7,286.20-10,914.90-3,993.40

Finding the Fourth Proportional to 7,286.20, 10,914.90 and 3,993.40

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Solution

The fourth proportional to 7,286.20, 10,914.90 and 3,993.40 is: 5,982.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,286.20 : 10,914.90 = 3,993.40 : x
  2. Step 2: Convert to fraction form
    7,286.20/10,914.90 = 3,993.40/x
  3. Step 3: Cross multiply
    7,286.20x = 10,914.90 × 3,993.40
  4. Step 4: Simplify right side
    7,286.20x = 43,587,561.66
  5. Step 5: Solve for x
    x = 43,587,561.66/7,286.20
  6. Step 6: Final answer
    x = 5,982.21

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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.