Home / 2,255.49-3,112.34-1,260.68

Finding the Fourth Proportional to 2,255.49, 3,112.34 and 1,260.68

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Solution

The fourth proportional to 2,255.49, 3,112.34 and 1,260.68 is: 1,739.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,255.49 : 3,112.34 = 1,260.68 : x
  2. Step 2: Convert to fraction form
    2,255.49/3,112.34 = 1,260.68/x
  3. Step 3: Cross multiply
    2,255.49x = 3,112.34 × 1,260.68
  4. Step 4: Simplify right side
    2,255.49x = 3,923,642.93
  5. Step 5: Solve for x
    x = 3,923,642.93/2,255.49
  6. Step 6: Final answer
    x = 1,739.60

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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.