Home / 2,286.40-3,427.80-1,260.40

Finding the Fourth Proportional to 2,286.40, 3,427.80 and 1,260.40

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Solution

The fourth proportional to 2,286.40, 3,427.80 and 1,260.40 is: 1,889.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,286.40 : 3,427.80 = 1,260.40 : x
  2. Step 2: Convert to fraction form
    2,286.40/3,427.80 = 1,260.40/x
  3. Step 3: Cross multiply
    2,286.40x = 3,427.80 × 1,260.40
  4. Step 4: Simplify right side
    2,286.40x = 4,320,399.12
  5. Step 5: Solve for x
    x = 4,320,399.12/2,286.40
  6. Step 6: Final answer
    x = 1,889.61

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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.