Home / 2,986.60-4,121.64-1,660.44

Finding the Fourth Proportional to 2,986.60, 4,121.64 and 1,660.44

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Solution

The fourth proportional to 2,986.60, 4,121.64 and 1,660.44 is: 2,291.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.60 : 4,121.64 = 1,660.44 : x
  2. Step 2: Convert to fraction form
    2,986.60/4,121.64 = 1,660.44/x
  3. Step 3: Cross multiply
    2,986.60x = 4,121.64 × 1,660.44
  4. Step 4: Simplify right side
    2,986.60x = 6,843,735.92
  5. Step 5: Solve for x
    x = 6,843,735.92/2,986.60
  6. Step 6: Final answer
    x = 2,291.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.