Home / 2,240.51-3,091.52-1,245.65

Finding the Fourth Proportional to 2,240.51, 3,091.52 and 1,245.65

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Solution

The fourth proportional to 2,240.51, 3,091.52 and 1,245.65 is: 1,718.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,240.51 : 3,091.52 = 1,245.65 : x
  2. Step 2: Convert to fraction form
    2,240.51/3,091.52 = 1,245.65/x
  3. Step 3: Cross multiply
    2,240.51x = 3,091.52 × 1,245.65
  4. Step 4: Simplify right side
    2,240.51x = 3,850,945.66
  5. Step 5: Solve for x
    x = 3,850,945.66/2,240.51
  6. Step 6: Final answer
    x = 1,718.78

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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.