Home / 2,731.20-4,096.49-756.98

Finding the Fourth Proportional to 2,731.20, 4,096.49 and 756.98

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Solution

The fourth proportional to 2,731.20, 4,096.49 and 756.98 is: 1,135.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,731.20 : 4,096.49 = 756.98 : x
  2. Step 2: Convert to fraction form
    2,731.20/4,096.49 = 756.98/x
  3. Step 3: Cross multiply
    2,731.20x = 4,096.49 × 756.98
  4. Step 4: Simplify right side
    2,731.20x = 3,100,936.73
  5. Step 5: Solve for x
    x = 3,100,936.73/2,731.20
  6. Step 6: Final answer
    x = 1,135.38

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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.