Home / 6,221.70-9,331.20-3,993.84

Finding the Fourth Proportional to 6,221.70, 9,331.20 and 3,993.84

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Solution

The fourth proportional to 6,221.70, 9,331.20 and 3,993.84 is: 5,989.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,221.70 : 9,331.20 = 3,993.84 : x
  2. Step 2: Convert to fraction form
    6,221.70/9,331.20 = 3,993.84/x
  3. Step 3: Cross multiply
    6,221.70x = 9,331.20 × 3,993.84
  4. Step 4: Simplify right side
    6,221.70x = 37,267,319.81
  5. Step 5: Solve for x
    x = 37,267,319.81/6,221.70
  6. Step 6: Final answer
    x = 5,989.89

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Half scale
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Double scale
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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.