Home / 2,156.62-2,976.09-1,260.44

Finding the Fourth Proportional to 2,156.62, 2,976.09 and 1,260.44

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Solution

The fourth proportional to 2,156.62, 2,976.09 and 1,260.44 is: 1,739.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.62 : 2,976.09 = 1,260.44 : x
  2. Step 2: Convert to fraction form
    2,156.62/2,976.09 = 1,260.44/x
  3. Step 3: Cross multiply
    2,156.62x = 2,976.09 × 1,260.44
  4. Step 4: Simplify right side
    2,156.62x = 3,751,182.88
  5. Step 5: Solve for x
    x = 3,751,182.88/2,156.62
  6. Step 6: Final answer
    x = 1,739.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.