Home / 3,860.60-5,791.91-1,668.80

Finding the Fourth Proportional to 3,860.60, 5,791.91 and 1,668.80

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Solution

The fourth proportional to 3,860.60, 5,791.91 and 1,668.80 is: 2,503.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860.60 : 5,791.91 = 1,668.80 : x
  2. Step 2: Convert to fraction form
    3,860.60/5,791.91 = 1,668.80/x
  3. Step 3: Cross multiply
    3,860.60x = 5,791.91 × 1,668.80
  4. Step 4: Simplify right side
    3,860.60x = 9,665,545.54
  5. Step 5: Solve for x
    x = 9,665,545.54/3,860.60
  6. Step 6: Final answer
    x = 2,503.64

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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.