Home / 3,689.35-5,529.87-1,838.59

Finding the Fourth Proportional to 3,689.35, 5,529.87 and 1,838.59

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Solution

The fourth proportional to 3,689.35, 5,529.87 and 1,838.59 is: 2,755.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,689.35 : 5,529.87 = 1,838.59 : x
  2. Step 2: Convert to fraction form
    3,689.35/5,529.87 = 1,838.59/x
  3. Step 3: Cross multiply
    3,689.35x = 5,529.87 × 1,838.59
  4. Step 4: Simplify right side
    3,689.35x = 10,167,163.68
  5. Step 5: Solve for x
    x = 10,167,163.68/3,689.35
  6. Step 6: Final answer
    x = 2,755.81

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1.5x scale

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.