Home / 3,831.15-5,286.78-2,152.26

Finding the Fourth Proportional to 3,831.15, 5,286.78 and 2,152.26

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Solution

The fourth proportional to 3,831.15, 5,286.78 and 2,152.26 is: 2,970.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.15 : 5,286.78 = 2,152.26 : x
  2. Step 2: Convert to fraction form
    3,831.15/5,286.78 = 2,152.26/x
  3. Step 3: Cross multiply
    3,831.15x = 5,286.78 × 2,152.26
  4. Step 4: Simplify right side
    3,831.15x = 11,378,525.12
  5. Step 5: Solve for x
    x = 11,378,525.12/3,831.15
  6. Step 6: Final answer
    x = 2,970.00

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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.