Home / 6,620.20-9,135.87-3,825.70

Finding the Fourth Proportional to 6,620.20, 9,135.87 and 3,825.70

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Solution

The fourth proportional to 6,620.20, 9,135.87 and 3,825.70 is: 5,279.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.20 : 9,135.87 = 3,825.70 : x
  2. Step 2: Convert to fraction form
    6,620.20/9,135.87 = 3,825.70/x
  3. Step 3: Cross multiply
    6,620.20x = 9,135.87 × 3,825.70
  4. Step 4: Simplify right side
    6,620.20x = 34,951,097.86
  5. Step 5: Solve for x
    x = 34,951,097.86/6,620.20
  6. Step 6: Final answer
    x = 5,279.46

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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.