Home / 7,972.20-11,942.10-5,040.12

Finding the Fourth Proportional to 7,972.20, 11,942.10 and 5,040.12

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Solution

The fourth proportional to 7,972.20, 11,942.10 and 5,040.12 is: 7,549.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.20 : 11,942.10 = 5,040.12 : x
  2. Step 2: Convert to fraction form
    7,972.20/11,942.10 = 5,040.12/x
  3. Step 3: Cross multiply
    7,972.20x = 11,942.10 × 5,040.12
  4. Step 4: Simplify right side
    7,972.20x = 60,189,617.05
  5. Step 5: Solve for x
    x = 60,189,617.05/7,972.20
  6. Step 6: Final answer
    x = 7,549.94

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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.