Home / 6,279.20-9,403.44-4,220.96

Finding the Fourth Proportional to 6,279.20, 9,403.44 and 4,220.96

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Solution

The fourth proportional to 6,279.20, 9,403.44 and 4,220.96 is: 6,321.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,279.20 : 9,403.44 = 4,220.96 : x
  2. Step 2: Convert to fraction form
    6,279.20/9,403.44 = 4,220.96/x
  3. Step 3: Cross multiply
    6,279.20x = 9,403.44 × 4,220.96
  4. Step 4: Simplify right side
    6,279.20x = 39,691,544.10
  5. Step 5: Solve for x
    x = 39,691,544.10/6,279.20
  6. Step 6: Final answer
    x = 6,321.11

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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.