Home / 6,120.20-9,180.30-3,933.20

Finding the Fourth Proportional to 6,120.20, 9,180.30 and 3,933.20

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Solution

The fourth proportional to 6,120.20, 9,180.30 and 3,933.20 is: 5,899.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,120.20 : 9,180.30 = 3,933.20 : x
  2. Step 2: Convert to fraction form
    6,120.20/9,180.30 = 3,933.20/x
  3. Step 3: Cross multiply
    6,120.20x = 9,180.30 × 3,933.20
  4. Step 4: Simplify right side
    6,120.20x = 36,107,955.96
  5. Step 5: Solve for x
    x = 36,107,955.96/6,120.20
  6. Step 6: Final answer
    x = 5,899.80

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Similar ratio
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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.