Home / 2,255.56-3,112.44-1,260.81

Finding the Fourth Proportional to 2,255.56, 3,112.44 and 1,260.81

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Solution

The fourth proportional to 2,255.56, 3,112.44 and 1,260.81 is: 1,739.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,255.56 : 3,112.44 = 1,260.81 : x
  2. Step 2: Convert to fraction form
    2,255.56/3,112.44 = 1,260.81/x
  3. Step 3: Cross multiply
    2,255.56x = 3,112.44 × 1,260.81
  4. Step 4: Simplify right side
    2,255.56x = 3,924,195.48
  5. Step 5: Solve for x
    x = 3,924,195.48/2,255.56
  6. Step 6: Final answer
    x = 1,739.79

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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.