Home / 2,080.60-3,121.20-619.56

Finding the Fourth Proportional to 2,080.60, 3,121.20 and 619.56

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Solution

The fourth proportional to 2,080.60, 3,121.20 and 619.56 is: 929.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080.60 : 3,121.20 = 619.56 : x
  2. Step 2: Convert to fraction form
    2,080.60/3,121.20 = 619.56/x
  3. Step 3: Cross multiply
    2,080.60x = 3,121.20 × 619.56
  4. Step 4: Simplify right side
    2,080.60x = 1,933,770.67
  5. Step 5: Solve for x
    x = 1,933,770.67/2,080.60
  6. Step 6: Final answer
    x = 929.43

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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.