Home / 3,836.89-5,756.15-1,239.63

Finding the Fourth Proportional to 3,836.89, 5,756.15 and 1,239.63

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Solution

The fourth proportional to 3,836.89, 5,756.15 and 1,239.63 is: 1,859.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,836.89 : 5,756.15 = 1,239.63 : x
  2. Step 2: Convert to fraction form
    3,836.89/5,756.15 = 1,239.63/x
  3. Step 3: Cross multiply
    3,836.89x = 5,756.15 × 1,239.63
  4. Step 4: Simplify right side
    3,836.89x = 7,135,496.22
  5. Step 5: Solve for x
    x = 7,135,496.22/3,836.89
  6. Step 6: Final answer
    x = 1,859.71

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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.