Home / 2,240.15-3,091.39-1,245.51

Finding the Fourth Proportional to 2,240.15, 3,091.39 and 1,245.51

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Solution

The fourth proportional to 2,240.15, 3,091.39 and 1,245.51 is: 1,718.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,240.15 : 3,091.39 = 1,245.51 : x
  2. Step 2: Convert to fraction form
    2,240.15/3,091.39 = 1,245.51/x
  3. Step 3: Cross multiply
    2,240.15x = 3,091.39 × 1,245.51
  4. Step 4: Simplify right side
    2,240.15x = 3,850,354.05
  5. Step 5: Solve for x
    x = 3,850,354.05/2,240.15
  6. Step 6: Final answer
    x = 1,718.80

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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.