Home / 2,760.24-4,140.26-911.31

Finding the Fourth Proportional to 2,760.24, 4,140.26 and 911.31

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Solution

The fourth proportional to 2,760.24, 4,140.26 and 911.31 is: 1,366.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,760.24 : 4,140.26 = 911.31 : x
  2. Step 2: Convert to fraction form
    2,760.24/4,140.26 = 911.31/x
  3. Step 3: Cross multiply
    2,760.24x = 4,140.26 × 911.31
  4. Step 4: Simplify right side
    2,760.24x = 3,773,043.68
  5. Step 5: Solve for x
    x = 3,773,043.68/2,760.24
  6. Step 6: Final answer
    x = 1,366.92

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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.