Home / 2,255.19-3,112.14-1,260.46

Finding the Fourth Proportional to 2,255.19, 3,112.14 and 1,260.46

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Solution

The fourth proportional to 2,255.19, 3,112.14 and 1,260.46 is: 1,739.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,255.19 : 3,112.14 = 1,260.46 : x
  2. Step 2: Convert to fraction form
    2,255.19/3,112.14 = 1,260.46/x
  3. Step 3: Cross multiply
    2,255.19x = 3,112.14 × 1,260.46
  4. Step 4: Simplify right side
    2,255.19x = 3,922,736.60
  5. Step 5: Solve for x
    x = 3,922,736.60/2,255.19
  6. Step 6: Final answer
    x = 1,739.43

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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.