Home / 2,550.80-3,828.26-1,318.58

Finding the Fourth Proportional to 2,550.80, 3,828.26 and 1,318.58

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Solution

The fourth proportional to 2,550.80, 3,828.26 and 1,318.58 is: 1,978.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,550.80 : 3,828.26 = 1,318.58 : x
  2. Step 2: Convert to fraction form
    2,550.80/3,828.26 = 1,318.58/x
  3. Step 3: Cross multiply
    2,550.80x = 3,828.26 × 1,318.58
  4. Step 4: Simplify right side
    2,550.80x = 5,047,843.81
  5. Step 5: Solve for x
    x = 5,047,843.81/2,550.80
  6. Step 6: Final answer
    x = 1,978.92

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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.