Home / 2,080.28-3,119.57-1,039.90

Finding the Fourth Proportional to 2,080.28, 3,119.57 and 1,039.90

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Solution

The fourth proportional to 2,080.28, 3,119.57 and 1,039.90 is: 1,559.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080.28 : 3,119.57 = 1,039.90 : x
  2. Step 2: Convert to fraction form
    2,080.28/3,119.57 = 1,039.90/x
  3. Step 3: Cross multiply
    2,080.28x = 3,119.57 × 1,039.90
  4. Step 4: Simplify right side
    2,080.28x = 3,244,040.84
  5. Step 5: Solve for x
    x = 3,244,040.84/2,080.28
  6. Step 6: Final answer
    x = 1,559.43

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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.