Home / 3,708.80-5,116.20-3,211.28

Finding the Fourth Proportional to 3,708.80, 5,116.20 and 3,211.28

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Solution

The fourth proportional to 3,708.80, 5,116.20 and 3,211.28 is: 4,429.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,708.80 : 5,116.20 = 3,211.28 : x
  2. Step 2: Convert to fraction form
    3,708.80/5,116.20 = 3,211.28/x
  3. Step 3: Cross multiply
    3,708.80x = 5,116.20 × 3,211.28
  4. Step 4: Simplify right side
    3,708.80x = 16,429,550.74
  5. Step 5: Solve for x
    x = 16,429,550.74/3,708.80
  6. Step 6: Final answer
    x = 4,429.88

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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.