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Finding the Fourth Proportional to 3,850.79, 5,745.95 and 3,615.68

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Solution

The fourth proportional to 3,850.79, 5,745.95 and 3,615.68 is: 5,395.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,850.79 : 5,745.95 = 3,615.68 : x
  2. Step 2: Convert to fraction form
    3,850.79/5,745.95 = 3,615.68/x
  3. Step 3: Cross multiply
    3,850.79x = 5,745.95 × 3,615.68
  4. Step 4: Simplify right side
    3,850.79x = 20,775,469.69
  5. Step 5: Solve for x
    x = 20,775,469.69/3,850.79
  6. Step 6: Final answer
    x = 5,395.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.