Home / 6,674.28-9,211.29-3,879.78

Finding the Fourth Proportional to 6,674.28, 9,211.29 and 3,879.78

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Solution

The fourth proportional to 6,674.28, 9,211.29 and 3,879.78 is: 5,354.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,674.28 : 9,211.29 = 3,879.78 : x
  2. Step 2: Convert to fraction form
    6,674.28/9,211.29 = 3,879.78/x
  3. Step 3: Cross multiply
    6,674.28x = 9,211.29 × 3,879.78
  4. Step 4: Simplify right side
    6,674.28x = 35,737,778.72
  5. Step 5: Solve for x
    x = 35,737,778.72/6,674.28
  6. Step 6: Final answer
    x = 5,354.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.