Home / 3,990.64-5,508.33-2,731.23

Finding the Fourth Proportional to 3,990.64, 5,508.33 and 2,731.23

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Solution

The fourth proportional to 3,990.64, 5,508.33 and 2,731.23 is: 3,769.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.64 : 5,508.33 = 2,731.23 : x
  2. Step 2: Convert to fraction form
    3,990.64/5,508.33 = 2,731.23/x
  3. Step 3: Cross multiply
    3,990.64x = 5,508.33 × 2,731.23
  4. Step 4: Simplify right side
    3,990.64x = 15,044,516.15
  5. Step 5: Solve for x
    x = 15,044,516.15/3,990.64
  6. Step 6: Final answer
    x = 3,769.95

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1.5x scale

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.