Home / 3,664.40-5,494.38-1,786.58

Finding the Fourth Proportional to 3,664.40, 5,494.38 and 1,786.58

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Solution

The fourth proportional to 3,664.40, 5,494.38 and 1,786.58 is: 2,678.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,664.40 : 5,494.38 = 1,786.58 : x
  2. Step 2: Convert to fraction form
    3,664.40/5,494.38 = 1,786.58/x
  3. Step 3: Cross multiply
    3,664.40x = 5,494.38 × 1,786.58
  4. Step 4: Simplify right side
    3,664.40x = 9,816,121.95
  5. Step 5: Solve for x
    x = 9,816,121.95/3,664.40
  6. Step 6: Final answer
    x = 2,678.78

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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.