Home / 2,687.08-4,027.31-1,282.24

Finding the Fourth Proportional to 2,687.08, 4,027.31 and 1,282.24

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Solution

The fourth proportional to 2,687.08, 4,027.31 and 1,282.24 is: 1,921.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.08 : 4,027.31 = 1,282.24 : x
  2. Step 2: Convert to fraction form
    2,687.08/4,027.31 = 1,282.24/x
  3. Step 3: Cross multiply
    2,687.08x = 4,027.31 × 1,282.24
  4. Step 4: Simplify right side
    2,687.08x = 5,163,977.97
  5. Step 5: Solve for x
    x = 5,163,977.97/2,687.08
  6. Step 6: Final answer
    x = 1,921.78

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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.