Home / 3,885.80-5,831.33-1,421.37

Finding the Fourth Proportional to 3,885.80, 5,831.33 and 1,421.37

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Solution

The fourth proportional to 3,885.80, 5,831.33 and 1,421.37 is: 2,133.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.80 : 5,831.33 = 1,421.37 : x
  2. Step 2: Convert to fraction form
    3,885.80/5,831.33 = 1,421.37/x
  3. Step 3: Cross multiply
    3,885.80x = 5,831.33 × 1,421.37
  4. Step 4: Simplify right side
    3,885.80x = 8,288,470.42
  5. Step 5: Solve for x
    x = 8,288,470.42/3,885.80
  6. Step 6: Final answer
    x = 2,133.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.