Home / 7,425.78-11,138.82-2,161.18

Finding the Fourth Proportional to 7,425.78, 11,138.82 and 2,161.18

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Solution

The fourth proportional to 7,425.78, 11,138.82 and 2,161.18 is: 3,241.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,425.78 : 11,138.82 = 2,161.18 : x
  2. Step 2: Convert to fraction form
    7,425.78/11,138.82 = 2,161.18/x
  3. Step 3: Cross multiply
    7,425.78x = 11,138.82 × 2,161.18
  4. Step 4: Simplify right side
    7,425.78x = 24,073,000.83
  5. Step 5: Solve for x
    x = 24,073,000.83/7,425.78
  6. Step 6: Final answer
    x = 3,241.82

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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.