Home / 2,760.37-4,139.96-911.04

Finding the Fourth Proportional to 2,760.37, 4,139.96 and 911.04

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Solution

The fourth proportional to 2,760.37, 4,139.96 and 911.04 is: 1,366.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,760.37 : 4,139.96 = 911.04 : x
  2. Step 2: Convert to fraction form
    2,760.37/4,139.96 = 911.04/x
  3. Step 3: Cross multiply
    2,760.37x = 4,139.96 × 911.04
  4. Step 4: Simplify right side
    2,760.37x = 3,771,669.16
  5. Step 5: Solve for x
    x = 3,771,669.16/2,760.37
  6. Step 6: Final answer
    x = 1,366.36

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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.