Home / 2,728.72-4,090.26-1,266.68

Finding the Fourth Proportional to 2,728.72, 4,090.26 and 1,266.68

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Solution

The fourth proportional to 2,728.72, 4,090.26 and 1,266.68 is: 1,898.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,728.72 : 4,090.26 = 1,266.68 : x
  2. Step 2: Convert to fraction form
    2,728.72/4,090.26 = 1,266.68/x
  3. Step 3: Cross multiply
    2,728.72x = 4,090.26 × 1,266.68
  4. Step 4: Simplify right side
    2,728.72x = 5,181,050.54
  5. Step 5: Solve for x
    x = 5,181,050.54/2,728.72
  6. Step 6: Final answer
    x = 1,898.71

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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.