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Finding the Fourth Proportional to 3,940.76, 5,908.02 and 2,704.40

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Solution

The fourth proportional to 3,940.76, 5,908.02 and 2,704.40 is: 4,054.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.76 : 5,908.02 = 2,704.40 : x
  2. Step 2: Convert to fraction form
    3,940.76/5,908.02 = 2,704.40/x
  3. Step 3: Cross multiply
    3,940.76x = 5,908.02 × 2,704.40
  4. Step 4: Simplify right side
    3,940.76x = 15,977,649.29
  5. Step 5: Solve for x
    x = 15,977,649.29/3,940.76
  6. Step 6: Final answer
    x = 4,054.46

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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.