Home / 2,240.54-3,091.91-1,245.80

Finding the Fourth Proportional to 2,240.54, 3,091.91 and 1,245.80

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Solution

The fourth proportional to 2,240.54, 3,091.91 and 1,245.80 is: 1,719.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,240.54 : 3,091.91 = 1,245.80 : x
  2. Step 2: Convert to fraction form
    2,240.54/3,091.91 = 1,245.80/x
  3. Step 3: Cross multiply
    2,240.54x = 3,091.91 × 1,245.80
  4. Step 4: Simplify right side
    2,240.54x = 3,851,879.79
  5. Step 5: Solve for x
    x = 3,851,879.79/2,240.54
  6. Step 6: Final answer
    x = 1,719.18

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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.