Home / 6,821.20-10,229.80-2,660.26

Finding the Fourth Proportional to 6,821.20, 10,229.80 and 2,660.26

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Solution

The fourth proportional to 6,821.20, 10,229.80 and 2,660.26 is: 3,989.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,821.20 : 10,229.80 = 2,660.26 : x
  2. Step 2: Convert to fraction form
    6,821.20/10,229.80 = 2,660.26/x
  3. Step 3: Cross multiply
    6,821.20x = 10,229.80 × 2,660.26
  4. Step 4: Simplify right side
    6,821.20x = 27,213,927.75
  5. Step 5: Solve for x
    x = 27,213,927.75/6,821.20
  6. Step 6: Final answer
    x = 3,989.61

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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.