Home / 3,919.78-5,857.97-3,190.24

Finding the Fourth Proportional to 3,919.78, 5,857.97 and 3,190.24

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Solution

The fourth proportional to 3,919.78, 5,857.97 and 3,190.24 is: 4,767.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.78 : 5,857.97 = 3,190.24 : x
  2. Step 2: Convert to fraction form
    3,919.78/5,857.97 = 3,190.24/x
  3. Step 3: Cross multiply
    3,919.78x = 5,857.97 × 3,190.24
  4. Step 4: Simplify right side
    3,919.78x = 18,688,330.21
  5. Step 5: Solve for x
    x = 18,688,330.21/3,919.78
  6. Step 6: Final answer
    x = 4,767.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.