Home / 3,859.47-5,786.57-1,226.09

Finding the Fourth Proportional to 3,859.47, 5,786.57 and 1,226.09

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Solution

The fourth proportional to 3,859.47, 5,786.57 and 1,226.09 is: 1,838.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.47 : 5,786.57 = 1,226.09 : x
  2. Step 2: Convert to fraction form
    3,859.47/5,786.57 = 1,226.09/x
  3. Step 3: Cross multiply
    3,859.47x = 5,786.57 × 1,226.09
  4. Step 4: Simplify right side
    3,859.47x = 7,094,873.14
  5. Step 5: Solve for x
    x = 7,094,873.14/3,859.47
  6. Step 6: Final answer
    x = 1,838.30

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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.