Home / 3,221.34-4,831.74-2,187.99

Finding the Fourth Proportional to 3,221.34, 4,831.74 and 2,187.99

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Solution

The fourth proportional to 3,221.34, 4,831.74 and 2,187.99 is: 3,281.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.34 : 4,831.74 = 2,187.99 : x
  2. Step 2: Convert to fraction form
    3,221.34/4,831.74 = 2,187.99/x
  3. Step 3: Cross multiply
    3,221.34x = 4,831.74 × 2,187.99
  4. Step 4: Simplify right side
    3,221.34x = 10,571,798.80
  5. Step 5: Solve for x
    x = 10,571,798.80/3,221.34
  6. Step 6: Final answer
    x = 3,281.80

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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.