Home / 3,721.76-5,120.88-3,222.80

Finding the Fourth Proportional to 3,721.76, 5,120.88 and 3,222.80

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Solution

The fourth proportional to 3,721.76, 5,120.88 and 3,222.80 is: 4,434.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.76 : 5,120.88 = 3,222.80 : x
  2. Step 2: Convert to fraction form
    3,721.76/5,120.88 = 3,222.80/x
  3. Step 3: Cross multiply
    3,721.76x = 5,120.88 × 3,222.80
  4. Step 4: Simplify right side
    3,721.76x = 16,503,572.06
  5. Step 5: Solve for x
    x = 16,503,572.06/3,721.76
  6. Step 6: Final answer
    x = 4,434.35

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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.