Home / 6,620.20-9,135.20-3,967.56

Finding the Fourth Proportional to 6,620.20, 9,135.20 and 3,967.56

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Solution

The fourth proportional to 6,620.20, 9,135.20 and 3,967.56 is: 5,474.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.20 : 9,135.20 = 3,967.56 : x
  2. Step 2: Convert to fraction form
    6,620.20/9,135.20 = 3,967.56/x
  3. Step 3: Cross multiply
    6,620.20x = 9,135.20 × 3,967.56
  4. Step 4: Simplify right side
    6,620.20x = 36,244,454.11
  5. Step 5: Solve for x
    x = 36,244,454.11/6,620.20
  6. Step 6: Final answer
    x = 5,474.83

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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.