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Finding the Fourth Proportional to 3,940.92, 5,880.87 and 3,504.60

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Solution

The fourth proportional to 3,940.92, 5,880.87 and 3,504.60 is: 5,229.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.92 : 5,880.87 = 3,504.60 : x
  2. Step 2: Convert to fraction form
    3,940.92/5,880.87 = 3,504.60/x
  3. Step 3: Cross multiply
    3,940.92x = 5,880.87 × 3,504.60
  4. Step 4: Simplify right side
    3,940.92x = 20,610,097.00
  5. Step 5: Solve for x
    x = 20,610,097.00/3,940.92
  6. Step 6: Final answer
    x = 5,229.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.