Home / 3,986.22-5,975.46-1,905.69

Finding the Fourth Proportional to 3,986.22, 5,975.46 and 1,905.69

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Solution

The fourth proportional to 3,986.22, 5,975.46 and 1,905.69 is: 2,856.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.22 : 5,975.46 = 1,905.69 : x
  2. Step 2: Convert to fraction form
    3,986.22/5,975.46 = 1,905.69/x
  3. Step 3: Cross multiply
    3,986.22x = 5,975.46 × 1,905.69
  4. Step 4: Simplify right side
    3,986.22x = 11,387,356.02
  5. Step 5: Solve for x
    x = 11,387,356.02/3,986.22
  6. Step 6: Final answer
    x = 2,856.68

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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.