Home / 3,831.27-5,286.62-2,152.60

Finding the Fourth Proportional to 3,831.27, 5,286.62 and 2,152.60

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Solution

The fourth proportional to 3,831.27, 5,286.62 and 2,152.60 is: 2,970.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.27 : 5,286.62 = 2,152.60 : x
  2. Step 2: Convert to fraction form
    3,831.27/5,286.62 = 2,152.60/x
  3. Step 3: Cross multiply
    3,831.27x = 5,286.62 × 2,152.60
  4. Step 4: Simplify right side
    3,831.27x = 11,379,973.14
  5. Step 5: Solve for x
    x = 11,379,973.14/3,831.27
  6. Step 6: Final answer
    x = 2,970.28

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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.