Home / 3,109.74-4,287.90-2,268.96

Finding the Fourth Proportional to 3,109.74, 4,287.90 and 2,268.96

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Solution

The fourth proportional to 3,109.74, 4,287.90 and 2,268.96 is: 3,128.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.74 : 4,287.90 = 2,268.96 : x
  2. Step 2: Convert to fraction form
    3,109.74/4,287.90 = 2,268.96/x
  3. Step 3: Cross multiply
    3,109.74x = 4,287.90 × 2,268.96
  4. Step 4: Simplify right side
    3,109.74x = 9,729,073.58
  5. Step 5: Solve for x
    x = 9,729,073.58/3,109.74
  6. Step 6: Final answer
    x = 3,128.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.