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Finding the Fourth Proportional to 3,838.78, 5,302.83 and 2,965.60

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Solution

The fourth proportional to 3,838.78, 5,302.83 and 2,965.60 is: 4,096.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,838.78 : 5,302.83 = 2,965.60 : x
  2. Step 2: Convert to fraction form
    3,838.78/5,302.83 = 2,965.60/x
  3. Step 3: Cross multiply
    3,838.78x = 5,302.83 × 2,965.60
  4. Step 4: Simplify right side
    3,838.78x = 15,726,072.65
  5. Step 5: Solve for x
    x = 15,726,072.65/3,838.78
  6. Step 6: Final answer
    x = 4,096.63

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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.