Home / 3,831.81-5,287.89-2,239.56

Finding the Fourth Proportional to 3,831.81, 5,287.89 and 2,239.56

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Solution

The fourth proportional to 3,831.81, 5,287.89 and 2,239.56 is: 3,090.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.81 : 5,287.89 = 2,239.56 : x
  2. Step 2: Convert to fraction form
    3,831.81/5,287.89 = 2,239.56/x
  3. Step 3: Cross multiply
    3,831.81x = 5,287.89 × 2,239.56
  4. Step 4: Simplify right side
    3,831.81x = 11,842,546.93
  5. Step 5: Solve for x
    x = 11,842,546.93/3,831.81
  6. Step 6: Final answer
    x = 3,090.59

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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.