Home / 3,857.18-5,788.76-1,778.09

Finding the Fourth Proportional to 3,857.18, 5,788.76 and 1,778.09

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Solution

The fourth proportional to 3,857.18, 5,788.76 and 1,778.09 is: 2,668.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.18 : 5,788.76 = 1,778.09 : x
  2. Step 2: Convert to fraction form
    3,857.18/5,788.76 = 1,778.09/x
  3. Step 3: Cross multiply
    3,857.18x = 5,788.76 × 1,778.09
  4. Step 4: Simplify right side
    3,857.18x = 10,292,898.43
  5. Step 5: Solve for x
    x = 10,292,898.43/3,857.18
  6. Step 6: Final answer
    x = 2,668.51

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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.