Home / 2,760.60-4,141.38-911.79

Finding the Fourth Proportional to 2,760.60, 4,141.38 and 911.79

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Solution

The fourth proportional to 2,760.60, 4,141.38 and 911.79 is: 1,367.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,760.60 : 4,141.38 = 911.79 : x
  2. Step 2: Convert to fraction form
    2,760.60/4,141.38 = 911.79/x
  3. Step 3: Cross multiply
    2,760.60x = 4,141.38 × 911.79
  4. Step 4: Simplify right side
    2,760.60x = 3,776,068.87
  5. Step 5: Solve for x
    x = 3,776,068.87/2,760.60
  6. Step 6: Final answer
    x = 1,367.84

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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.