Home / 3,129.14-4,706.67-2,831.06

Finding the Fourth Proportional to 3,129.14, 4,706.67 and 2,831.06

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Solution

The fourth proportional to 3,129.14, 4,706.67 and 2,831.06 is: 4,258.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.14 : 4,706.67 = 2,831.06 : x
  2. Step 2: Convert to fraction form
    3,129.14/4,706.67 = 2,831.06/x
  3. Step 3: Cross multiply
    3,129.14x = 4,706.67 × 2,831.06
  4. Step 4: Simplify right side
    3,129.14x = 13,324,865.17
  5. Step 5: Solve for x
    x = 13,324,865.17/3,129.14
  6. Step 6: Final answer
    x = 4,258.32

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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.