Home / 2,080.13-3,120.20-619.30

Finding the Fourth Proportional to 2,080.13, 3,120.20 and 619.30

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Solution

The fourth proportional to 2,080.13, 3,120.20 and 619.30 is: 928.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080.13 : 3,120.20 = 619.30 : x
  2. Step 2: Convert to fraction form
    2,080.13/3,120.20 = 619.30/x
  3. Step 3: Cross multiply
    2,080.13x = 3,120.20 × 619.30
  4. Step 4: Simplify right side
    2,080.13x = 1,932,339.86
  5. Step 5: Solve for x
    x = 1,932,339.86/2,080.13
  6. Step 6: Final answer
    x = 928.95

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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.