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Finding the Fourth Proportional to 2,873.82, 3,963.99 and 2,745.18

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Solution

The fourth proportional to 2,873.82, 3,963.99 and 2,745.18 is: 3,786.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,873.82 : 3,963.99 = 2,745.18 : x
  2. Step 2: Convert to fraction form
    2,873.82/3,963.99 = 2,745.18/x
  3. Step 3: Cross multiply
    2,873.82x = 3,963.99 × 2,745.18
  4. Step 4: Simplify right side
    2,873.82x = 10,881,866.07
  5. Step 5: Solve for x
    x = 10,881,866.07/2,873.82
  6. Step 6: Final answer
    x = 3,786.55

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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.