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Finding the Fourth Proportional to 3,620.82, 4,993.98 and 2,629.38

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Solution

The fourth proportional to 3,620.82, 4,993.98 and 2,629.38 is: 3,626.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.82 : 4,993.98 = 2,629.38 : x
  2. Step 2: Convert to fraction form
    3,620.82/4,993.98 = 2,629.38/x
  3. Step 3: Cross multiply
    3,620.82x = 4,993.98 × 2,629.38
  4. Step 4: Simplify right side
    3,620.82x = 13,131,071.13
  5. Step 5: Solve for x
    x = 13,131,071.13/3,620.82
  6. Step 6: Final answer
    x = 3,626.55

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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.