Home / 2,080.48-3,121.20-1,106.40

Finding the Fourth Proportional to 2,080.48, 3,121.20 and 1,106.40

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Solution

The fourth proportional to 2,080.48, 3,121.20 and 1,106.40 is: 1,659.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080.48 : 3,121.20 = 1,106.40 : x
  2. Step 2: Convert to fraction form
    2,080.48/3,121.20 = 1,106.40/x
  3. Step 3: Cross multiply
    2,080.48x = 3,121.20 × 1,106.40
  4. Step 4: Simplify right side
    2,080.48x = 3,453,295.68
  5. Step 5: Solve for x
    x = 3,453,295.68/2,080.48
  6. Step 6: Final answer
    x = 1,659.86

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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.