Home / 3,891.30-5,831.46-1,695.39

Finding the Fourth Proportional to 3,891.30, 5,831.46 and 1,695.39

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Solution

The fourth proportional to 3,891.30, 5,831.46 and 1,695.39 is: 2,540.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.30 : 5,831.46 = 1,695.39 : x
  2. Step 2: Convert to fraction form
    3,891.30/5,831.46 = 1,695.39/x
  3. Step 3: Cross multiply
    3,891.30x = 5,831.46 × 1,695.39
  4. Step 4: Simplify right side
    3,891.30x = 9,886,598.97
  5. Step 5: Solve for x
    x = 9,886,598.97/3,891.30
  6. Step 6: Final answer
    x = 2,540.69

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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.