Home / 3,687.32-5,088.96-2,115.38

Finding the Fourth Proportional to 3,687.32, 5,088.96 and 2,115.38

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Solution

The fourth proportional to 3,687.32, 5,088.96 and 2,115.38 is: 2,919.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.32 : 5,088.96 = 2,115.38 : x
  2. Step 2: Convert to fraction form
    3,687.32/5,088.96 = 2,115.38/x
  3. Step 3: Cross multiply
    3,687.32x = 5,088.96 × 2,115.38
  4. Step 4: Simplify right side
    3,687.32x = 10,765,084.20
  5. Step 5: Solve for x
    x = 10,765,084.20/3,687.32
  6. Step 6: Final answer
    x = 2,919.49

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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.