Home / 3,831.81-5,287.17-2,340.09

Finding the Fourth Proportional to 3,831.81, 5,287.17 and 2,340.09

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Solution

The fourth proportional to 3,831.81, 5,287.17 and 2,340.09 is: 3,228.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.81 : 5,287.17 = 2,340.09 : x
  2. Step 2: Convert to fraction form
    3,831.81/5,287.17 = 2,340.09/x
  3. Step 3: Cross multiply
    3,831.81x = 5,287.17 × 2,340.09
  4. Step 4: Simplify right side
    3,831.81x = 12,372,462.42
  5. Step 5: Solve for x
    x = 12,372,462.42/3,831.81
  6. Step 6: Final answer
    x = 3,228.89

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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.