Home / 2,240.21-3,091.40-1,245.56

Finding the Fourth Proportional to 2,240.21, 3,091.40 and 1,245.56

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Solution

The fourth proportional to 2,240.21, 3,091.40 and 1,245.56 is: 1,718.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,240.21 : 3,091.40 = 1,245.56 : x
  2. Step 2: Convert to fraction form
    2,240.21/3,091.40 = 1,245.56/x
  3. Step 3: Cross multiply
    2,240.21x = 3,091.40 × 1,245.56
  4. Step 4: Simplify right side
    2,240.21x = 3,850,502.50
  5. Step 5: Solve for x
    x = 3,850,502.50/2,240.21
  6. Step 6: Final answer
    x = 1,718.82

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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.