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Finding the Fourth Proportional to 3,168.87, 4,368.38 and 2,578.38

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Solution

The fourth proportional to 3,168.87, 4,368.38 and 2,578.38 is: 3,554.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,168.87 : 4,368.38 = 2,578.38 : x
  2. Step 2: Convert to fraction form
    3,168.87/4,368.38 = 2,578.38/x
  3. Step 3: Cross multiply
    3,168.87x = 4,368.38 × 2,578.38
  4. Step 4: Simplify right side
    3,168.87x = 11,263,330.73
  5. Step 5: Solve for x
    x = 11,263,330.73/3,168.87
  6. Step 6: Final answer
    x = 3,554.37

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Double scale
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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.