Home / 2,122.73-3,182.65-1,080.72

Finding the Fourth Proportional to 2,122.73, 3,182.65 and 1,080.72

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Solution

The fourth proportional to 2,122.73, 3,182.65 and 1,080.72 is: 1,620.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.73 : 3,182.65 = 1,080.72 : x
  2. Step 2: Convert to fraction form
    2,122.73/3,182.65 = 1,080.72/x
  3. Step 3: Cross multiply
    2,122.73x = 3,182.65 × 1,080.72
  4. Step 4: Simplify right side
    2,122.73x = 3,439,539.20
  5. Step 5: Solve for x
    x = 3,439,539.20/2,122.73
  6. Step 6: Final answer
    x = 1,620.34

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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.