Home / 7,982.72-11,975.36-3,366.40

Finding the Fourth Proportional to 7,982.72, 11,975.36 and 3,366.40

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Solution

The fourth proportional to 7,982.72, 11,975.36 and 3,366.40 is: 5,050.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,982.72 : 11,975.36 = 3,366.40 : x
  2. Step 2: Convert to fraction form
    7,982.72/11,975.36 = 3,366.40/x
  3. Step 3: Cross multiply
    7,982.72x = 11,975.36 × 3,366.40
  4. Step 4: Simplify right side
    7,982.72x = 40,313,851.90
  5. Step 5: Solve for x
    x = 40,313,851.90/7,982.72
  6. Step 6: Final answer
    x = 5,050.14

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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.