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Finding the Fourth Proportional to 3,928.51, 5,884.54 and 3,658.78

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Solution

The fourth proportional to 3,928.51, 5,884.54 and 3,658.78 is: 5,480.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.51 : 5,884.54 = 3,658.78 : x
  2. Step 2: Convert to fraction form
    3,928.51/5,884.54 = 3,658.78/x
  3. Step 3: Cross multiply
    3,928.51x = 5,884.54 × 3,658.78
  4. Step 4: Simplify right side
    3,928.51x = 21,530,237.26
  5. Step 5: Solve for x
    x = 21,530,237.26/3,928.51
  6. Step 6: Final answer
    x = 5,480.51

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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.