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Finding the Fourth Proportional to 2,796.54, 4,195.62 and 1,687.20

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Solution

The fourth proportional to 2,796.54, 4,195.62 and 1,687.20 is: 2,531.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,796.54 : 4,195.62 = 1,687.20 : x
  2. Step 2: Convert to fraction form
    2,796.54/4,195.62 = 1,687.20/x
  3. Step 3: Cross multiply
    2,796.54x = 4,195.62 × 1,687.20
  4. Step 4: Simplify right side
    2,796.54x = 7,078,850.06
  5. Step 5: Solve for x
    x = 7,078,850.06/2,796.54
  6. Step 6: Final answer
    x = 2,531.29

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1.5x scale

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.