Home / 2,240.39-3,091.74-1,245.64

Finding the Fourth Proportional to 2,240.39, 3,091.74 and 1,245.64

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Solution

The fourth proportional to 2,240.39, 3,091.74 and 1,245.64 is: 1,718.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,240.39 : 3,091.74 = 1,245.64 : x
  2. Step 2: Convert to fraction form
    2,240.39/3,091.74 = 1,245.64/x
  3. Step 3: Cross multiply
    2,240.39x = 3,091.74 × 1,245.64
  4. Step 4: Simplify right side
    2,240.39x = 3,851,195.01
  5. Step 5: Solve for x
    x = 3,851,195.01/2,240.39
  6. Step 6: Final answer
    x = 1,718.98

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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.