Home / 3,859.80-5,790.78-1,669.56

Finding the Fourth Proportional to 3,859.80, 5,790.78 and 1,669.56

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Solution

The fourth proportional to 3,859.80, 5,790.78 and 1,669.56 is: 2,504.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.80 : 5,790.78 = 1,669.56 : x
  2. Step 2: Convert to fraction form
    3,859.80/5,790.78 = 1,669.56/x
  3. Step 3: Cross multiply
    3,859.80x = 5,790.78 × 1,669.56
  4. Step 4: Simplify right side
    3,859.80x = 9,668,054.66
  5. Step 5: Solve for x
    x = 9,668,054.66/3,859.80
  6. Step 6: Final answer
    x = 2,504.81

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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.