Home / 2,255.41-3,112.45-1,260.64

Finding the Fourth Proportional to 2,255.41, 3,112.45 and 1,260.64

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Solution

The fourth proportional to 2,255.41, 3,112.45 and 1,260.64 is: 1,739.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,255.41 : 3,112.45 = 1,260.64 : x
  2. Step 2: Convert to fraction form
    2,255.41/3,112.45 = 1,260.64/x
  3. Step 3: Cross multiply
    2,255.41x = 3,112.45 × 1,260.64
  4. Step 4: Simplify right side
    2,255.41x = 3,923,678.97
  5. Step 5: Solve for x
    x = 3,923,678.97/2,255.41
  6. Step 6: Final answer
    x = 1,739.67

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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.