Home / 3,928.60-5,859.80-3,656.44

Finding the Fourth Proportional to 3,928.60, 5,859.80 and 3,656.44

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Solution

The fourth proportional to 3,928.60, 5,859.80 and 3,656.44 is: 5,453.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.60 : 5,859.80 = 3,656.44 : x
  2. Step 2: Convert to fraction form
    3,928.60/5,859.80 = 3,656.44/x
  3. Step 3: Cross multiply
    3,928.60x = 5,859.80 × 3,656.44
  4. Step 4: Simplify right side
    3,928.60x = 21,426,007.11
  5. Step 5: Solve for x
    x = 21,426,007.11/3,928.60
  6. Step 6: Final answer
    x = 5,453.85

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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.