Home / 3,919.12-5,876.79-2,072.32

Finding the Fourth Proportional to 3,919.12, 5,876.79 and 2,072.32

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Solution

The fourth proportional to 3,919.12, 5,876.79 and 2,072.32 is: 3,107.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.12 : 5,876.79 = 2,072.32 : x
  2. Step 2: Convert to fraction form
    3,919.12/5,876.79 = 2,072.32/x
  3. Step 3: Cross multiply
    3,919.12x = 5,876.79 × 2,072.32
  4. Step 4: Simplify right side
    3,919.12x = 12,178,589.45
  5. Step 5: Solve for x
    x = 12,178,589.45/3,919.12
  6. Step 6: Final answer
    x = 3,107.48

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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.