Home / 2,080.25-3,120.17-619.28

Finding the Fourth Proportional to 2,080.25, 3,120.17 and 619.28

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Solution

The fourth proportional to 2,080.25, 3,120.17 and 619.28 is: 928.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080.25 : 3,120.17 = 619.28 : x
  2. Step 2: Convert to fraction form
    2,080.25/3,120.17 = 619.28/x
  3. Step 3: Cross multiply
    2,080.25x = 3,120.17 × 619.28
  4. Step 4: Simplify right side
    2,080.25x = 1,932,240.18
  5. Step 5: Solve for x
    x = 1,932,240.18/2,080.25
  6. Step 6: Final answer
    x = 928.85

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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.