Home / 6,121.80-8,449.62-3,470.79

Finding the Fourth Proportional to 6,121.80, 8,449.62 and 3,470.79

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Solution

The fourth proportional to 6,121.80, 8,449.62 and 3,470.79 is: 4,790.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,121.80 : 8,449.62 = 3,470.79 : x
  2. Step 2: Convert to fraction form
    6,121.80/8,449.62 = 3,470.79/x
  3. Step 3: Cross multiply
    6,121.80x = 8,449.62 × 3,470.79
  4. Step 4: Simplify right side
    6,121.80x = 29,326,856.60
  5. Step 5: Solve for x
    x = 29,326,856.60/6,121.80
  6. Step 6: Final answer
    x = 4,790.56

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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.