Home / 2,680.83-4,021.14-1,120.43

Finding the Fourth Proportional to 2,680.83, 4,021.14 and 1,120.43

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Solution

The fourth proportional to 2,680.83, 4,021.14 and 1,120.43 is: 1,680.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,680.83 : 4,021.14 = 1,120.43 : x
  2. Step 2: Convert to fraction form
    2,680.83/4,021.14 = 1,120.43/x
  3. Step 3: Cross multiply
    2,680.83x = 4,021.14 × 1,120.43
  4. Step 4: Simplify right side
    2,680.83x = 4,505,405.89
  5. Step 5: Solve for x
    x = 4,505,405.89/2,680.83
  6. Step 6: Final answer
    x = 1,680.60

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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.