Home / 3,687.62-5,088.84-2,115.68

Finding the Fourth Proportional to 3,687.62, 5,088.84 and 2,115.68

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Solution

The fourth proportional to 3,687.62, 5,088.84 and 2,115.68 is: 2,919.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.62 : 5,088.84 = 2,115.68 : x
  2. Step 2: Convert to fraction form
    3,687.62/5,088.84 = 2,115.68/x
  3. Step 3: Cross multiply
    3,687.62x = 5,088.84 × 2,115.68
  4. Step 4: Simplify right side
    3,687.62x = 10,766,331.57
  5. Step 5: Solve for x
    x = 10,766,331.57/3,687.62
  6. Step 6: Final answer
    x = 2,919.59

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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.