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Finding the Fourth Proportional to 3,883.78, 5,825.81 and 1,072.90

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Solution

The fourth proportional to 3,883.78, 5,825.81 and 1,072.90 is: 1,609.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,883.78 : 5,825.81 = 1,072.90 : x
  2. Step 2: Convert to fraction form
    3,883.78/5,825.81 = 1,072.90/x
  3. Step 3: Cross multiply
    3,883.78x = 5,825.81 × 1,072.90
  4. Step 4: Simplify right side
    3,883.78x = 6,250,499.67
  5. Step 5: Solve for x
    x = 6,250,499.67/3,883.78
  6. Step 6: Final answer
    x = 1,609.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.