Home / 2,255.23-3,112.14-1,260.49

Finding the Fourth Proportional to 2,255.23, 3,112.14 and 1,260.49

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Solution

The fourth proportional to 2,255.23, 3,112.14 and 1,260.49 is: 1,739.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,255.23 : 3,112.14 = 1,260.49 : x
  2. Step 2: Convert to fraction form
    2,255.23/3,112.14 = 1,260.49/x
  3. Step 3: Cross multiply
    2,255.23x = 3,112.14 × 1,260.49
  4. Step 4: Simplify right side
    2,255.23x = 3,922,821.35
  5. Step 5: Solve for x
    x = 3,922,821.35/2,255.23
  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.