Home / 6,121.45-9,179.34-1,960.54

Finding the Fourth Proportional to 6,121.45, 9,179.34 and 1,960.54

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Solution

The fourth proportional to 6,121.45, 9,179.34 and 1,960.54 is: 2,939.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,121.45 : 9,179.34 = 1,960.54 : x
  2. Step 2: Convert to fraction form
    6,121.45/9,179.34 = 1,960.54/x
  3. Step 3: Cross multiply
    6,121.45x = 9,179.34 × 1,960.54
  4. Step 4: Simplify right side
    6,121.45x = 17,996,432.94
  5. Step 5: Solve for x
    x = 17,996,432.94/6,121.45
  6. Step 6: Final answer
    x = 2,939.90

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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.