Home / 2,240.12-3,091.47-1,245.41

Finding the Fourth Proportional to 2,240.12, 3,091.47 and 1,245.41

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Solution

The fourth proportional to 2,240.12, 3,091.47 and 1,245.41 is: 1,718.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,240.12 : 3,091.47 = 1,245.41 : x
  2. Step 2: Convert to fraction form
    2,240.12/3,091.47 = 1,245.41/x
  3. Step 3: Cross multiply
    2,240.12x = 3,091.47 × 1,245.41
  4. Step 4: Simplify right side
    2,240.12x = 3,850,139.12
  5. Step 5: Solve for x
    x = 3,850,139.12/2,240.12
  6. Step 6: Final answer
    x = 1,718.72

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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.