Home / 3,989.46-5,503.10-2,729.88

Finding the Fourth Proportional to 3,989.46, 5,503.10 and 2,729.88

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Solution

The fourth proportional to 3,989.46, 5,503.10 and 2,729.88 is: 3,765.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.46 : 5,503.10 = 2,729.88 : x
  2. Step 2: Convert to fraction form
    3,989.46/5,503.10 = 2,729.88/x
  3. Step 3: Cross multiply
    3,989.46x = 5,503.10 × 2,729.88
  4. Step 4: Simplify right side
    3,989.46x = 15,022,802.63
  5. Step 5: Solve for x
    x = 15,022,802.63/3,989.46
  6. Step 6: Final answer
    x = 3,765.62

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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.