Home / 2,240.38-3,091.67-1,245.70

Finding the Fourth Proportional to 2,240.38, 3,091.67 and 1,245.70

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Solution

The fourth proportional to 2,240.38, 3,091.67 and 1,245.70 is: 1,719.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,240.38 : 3,091.67 = 1,245.70 : x
  2. Step 2: Convert to fraction form
    2,240.38/3,091.67 = 1,245.70/x
  3. Step 3: Cross multiply
    2,240.38x = 3,091.67 × 1,245.70
  4. Step 4: Simplify right side
    2,240.38x = 3,851,287.09
  5. Step 5: Solve for x
    x = 3,851,287.09/2,240.38
  6. Step 6: Final answer
    x = 1,719.03

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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.