Home / 2,089.44-3,138.60-1,268.08

Finding the Fourth Proportional to 2,089.44, 3,138.60 and 1,268.08

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Solution

The fourth proportional to 2,089.44, 3,138.60 and 1,268.08 is: 1,904.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,089.44 : 3,138.60 = 1,268.08 : x
  2. Step 2: Convert to fraction form
    2,089.44/3,138.60 = 1,268.08/x
  3. Step 3: Cross multiply
    2,089.44x = 3,138.60 × 1,268.08
  4. Step 4: Simplify right side
    2,089.44x = 3,979,995.89
  5. Step 5: Solve for x
    x = 3,979,995.89/2,089.44
  6. Step 6: Final answer
    x = 1,904.81

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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.