Home / 3,221.28-4,831.92-2,668.32

Finding the Fourth Proportional to 3,221.28, 4,831.92 and 2,668.32

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Solution

The fourth proportional to 3,221.28, 4,831.92 and 2,668.32 is: 4,002.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.28 : 4,831.92 = 2,668.32 : x
  2. Step 2: Convert to fraction form
    3,221.28/4,831.92 = 2,668.32/x
  3. Step 3: Cross multiply
    3,221.28x = 4,831.92 × 2,668.32
  4. Step 4: Simplify right side
    3,221.28x = 12,893,108.77
  5. Step 5: Solve for x
    x = 12,893,108.77/3,221.28
  6. Step 6: Final answer
    x = 4,002.48

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1.5x scale

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.