Home / 2,986.56-4,121.75-1,660.59

Finding the Fourth Proportional to 2,986.56, 4,121.75 and 1,660.59

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Solution

The fourth proportional to 2,986.56, 4,121.75 and 1,660.59 is: 2,291.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.56 : 4,121.75 = 1,660.59 : x
  2. Step 2: Convert to fraction form
    2,986.56/4,121.75 = 1,660.59/x
  3. Step 3: Cross multiply
    2,986.56x = 4,121.75 × 1,660.59
  4. Step 4: Simplify right side
    2,986.56x = 6,844,540.98
  5. Step 5: Solve for x
    x = 6,844,540.98/2,986.56
  6. Step 6: Final answer
    x = 2,291.78

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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.