Home / 3,862.45-5,789.20-1,778.08

Finding the Fourth Proportional to 3,862.45, 5,789.20 and 1,778.08

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Solution

The fourth proportional to 3,862.45, 5,789.20 and 1,778.08 is: 2,665.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,862.45 : 5,789.20 = 1,778.08 : x
  2. Step 2: Convert to fraction form
    3,862.45/5,789.20 = 1,778.08/x
  3. Step 3: Cross multiply
    3,862.45x = 5,789.20 × 1,778.08
  4. Step 4: Simplify right side
    3,862.45x = 10,293,660.74
  5. Step 5: Solve for x
    x = 10,293,660.74/3,862.45
  6. Step 6: Final answer
    x = 2,665.06

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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.