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Finding the Fourth Proportional to 3,939.74, 5,909.61 and 2,703.41

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Solution

The fourth proportional to 3,939.74, 5,909.61 and 2,703.41 is: 4,055.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.74 : 5,909.61 = 2,703.41 : x
  2. Step 2: Convert to fraction form
    3,939.74/5,909.61 = 2,703.41/x
  3. Step 3: Cross multiply
    3,939.74x = 5,909.61 × 2,703.41
  4. Step 4: Simplify right side
    3,939.74x = 15,976,069.22
  5. Step 5: Solve for x
    x = 15,976,069.22/3,939.74
  6. Step 6: Final answer
    x = 4,055.10

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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.