Home / 4,139.91-6,209.85-2,912.82

Finding the Fourth Proportional to 4,139.91, 6,209.85 and 2,912.82

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Solution

The fourth proportional to 4,139.91, 6,209.85 and 2,912.82 is: 4,369.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,139.91 : 6,209.85 = 2,912.82 : x
  2. Step 2: Convert to fraction form
    4,139.91/6,209.85 = 2,912.82/x
  3. Step 3: Cross multiply
    4,139.91x = 6,209.85 × 2,912.82
  4. Step 4: Simplify right side
    4,139.91x = 18,088,175.28
  5. Step 5: Solve for x
    x = 18,088,175.28/4,139.91
  6. Step 6: Final answer
    x = 4,369.22

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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.