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Finding the Fourth Proportional to 3,739.64, 5,578.29 and 3,611.68

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Solution

The fourth proportional to 3,739.64, 5,578.29 and 3,611.68 is: 5,387.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,739.64 : 5,578.29 = 3,611.68 : x
  2. Step 2: Convert to fraction form
    3,739.64/5,578.29 = 3,611.68/x
  3. Step 3: Cross multiply
    3,739.64x = 5,578.29 × 3,611.68
  4. Step 4: Simplify right side
    3,739.64x = 20,146,998.43
  5. Step 5: Solve for x
    x = 20,146,998.43/3,739.64
  6. Step 6: Final answer
    x = 5,387.42

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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.