Home / 2,986.38-4,121.15-1,660.05

Finding the Fourth Proportional to 2,986.38, 4,121.15 and 1,660.05

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Solution

The fourth proportional to 2,986.38, 4,121.15 and 1,660.05 is: 2,290.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.38 : 4,121.15 = 1,660.05 : x
  2. Step 2: Convert to fraction form
    2,986.38/4,121.15 = 1,660.05/x
  3. Step 3: Cross multiply
    2,986.38x = 4,121.15 × 1,660.05
  4. Step 4: Simplify right side
    2,986.38x = 6,841,306.76
  5. Step 5: Solve for x
    x = 6,841,306.76/2,986.38
  6. Step 6: Final answer
    x = 2,290.84

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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.