Home / 3,687.12-5,086.80-2,287.44

Finding the Fourth Proportional to 3,687.12, 5,086.80 and 2,287.44

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Solution

The fourth proportional to 3,687.12, 5,086.80 and 2,287.44 is: 3,155.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.12 : 5,086.80 = 2,287.44 : x
  2. Step 2: Convert to fraction form
    3,687.12/5,086.80 = 2,287.44/x
  3. Step 3: Cross multiply
    3,687.12x = 5,086.80 × 2,287.44
  4. Step 4: Simplify right side
    3,687.12x = 11,635,749.79
  5. Step 5: Solve for x
    x = 11,635,749.79/3,687.12
  6. Step 6: Final answer
    x = 3,155.78

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1.5x scale

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.