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Finding the Fourth Proportional to 3,651.75, 5,039.42 and 2,079.88

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Solution

The fourth proportional to 3,651.75, 5,039.42 and 2,079.88 is: 2,870.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,651.75 : 5,039.42 = 2,079.88 : x
  2. Step 2: Convert to fraction form
    3,651.75/5,039.42 = 2,079.88/x
  3. Step 3: Cross multiply
    3,651.75x = 5,039.42 × 2,079.88
  4. Step 4: Simplify right side
    3,651.75x = 10,481,365.87
  5. Step 5: Solve for x
    x = 10,481,365.87/3,651.75
  6. Step 6: Final answer
    x = 2,870.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.