Home / 2,760.48-4,141.41-911.70

Finding the Fourth Proportional to 2,760.48, 4,141.41 and 911.70

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Solution

The fourth proportional to 2,760.48, 4,141.41 and 911.70 is: 1,367.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,760.48 : 4,141.41 = 911.70 : x
  2. Step 2: Convert to fraction form
    2,760.48/4,141.41 = 911.70/x
  3. Step 3: Cross multiply
    2,760.48x = 4,141.41 × 911.70
  4. Step 4: Simplify right side
    2,760.48x = 3,775,723.50
  5. Step 5: Solve for x
    x = 3,775,723.50/2,760.48
  6. Step 6: Final answer
    x = 1,367.78

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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.