Home / 3,936.91-5,436.45-2,940.49

Finding the Fourth Proportional to 3,936.91, 5,436.45 and 2,940.49

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Solution

The fourth proportional to 3,936.91, 5,436.45 and 2,940.49 is: 4,060.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.91 : 5,436.45 = 2,940.49 : x
  2. Step 2: Convert to fraction form
    3,936.91/5,436.45 = 2,940.49/x
  3. Step 3: Cross multiply
    3,936.91x = 5,436.45 × 2,940.49
  4. Step 4: Simplify right side
    3,936.91x = 15,985,826.86
  5. Step 5: Solve for x
    x = 15,985,826.86/3,936.91
  6. Step 6: Final answer
    x = 4,060.50

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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.