Home / 5,274.27-7,912.26-1,987.61

Finding the Fourth Proportional to 5,274.27, 7,912.26 and 1,987.61

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Solution

The fourth proportional to 5,274.27, 7,912.26 and 1,987.61 is: 2,981.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,274.27 : 7,912.26 = 1,987.61 : x
  2. Step 2: Convert to fraction form
    5,274.27/7,912.26 = 1,987.61/x
  3. Step 3: Cross multiply
    5,274.27x = 7,912.26 × 1,987.61
  4. Step 4: Simplify right side
    5,274.27x = 15,726,447.54
  5. Step 5: Solve for x
    x = 15,726,447.54/5,274.27
  6. Step 6: Final answer
    x = 2,981.73

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1.5x scale

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.