Home / 7,940.40-11,910.60-4,441.20

Finding the Fourth Proportional to 7,940.40, 11,910.60 and 4,441.20

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Solution

The fourth proportional to 7,940.40, 11,910.60 and 4,441.20 is: 6,661.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,940.40 : 11,910.60 = 4,441.20 : x
  2. Step 2: Convert to fraction form
    7,940.40/11,910.60 = 4,441.20/x
  3. Step 3: Cross multiply
    7,940.40x = 11,910.60 × 4,441.20
  4. Step 4: Simplify right side
    7,940.40x = 52,897,356.72
  5. Step 5: Solve for x
    x = 52,897,356.72/7,940.40
  6. Step 6: Final answer
    x = 6,661.80

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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.