Home / 3,831.78-5,288.10-2,238.94

Finding the Fourth Proportional to 3,831.78, 5,288.10 and 2,238.94

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Solution

The fourth proportional to 3,831.78, 5,288.10 and 2,238.94 is: 3,089.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.78 : 5,288.10 = 2,238.94 : x
  2. Step 2: Convert to fraction form
    3,831.78/5,288.10 = 2,238.94/x
  3. Step 3: Cross multiply
    3,831.78x = 5,288.10 × 2,238.94
  4. Step 4: Simplify right side
    3,831.78x = 11,839,739.98
  5. Step 5: Solve for x
    x = 11,839,739.98/3,831.78
  6. Step 6: Final answer
    x = 3,089.88

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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.