Home / 5,745.60-7,928.82-3,620.70

Finding the Fourth Proportional to 5,745.60, 7,928.82 and 3,620.70

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Solution

The fourth proportional to 5,745.60, 7,928.82 and 3,620.70 is: 4,996.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,745.60 : 7,928.82 = 3,620.70 : x
  2. Step 2: Convert to fraction form
    5,745.60/7,928.82 = 3,620.70/x
  3. Step 3: Cross multiply
    5,745.60x = 7,928.82 × 3,620.70
  4. Step 4: Simplify right side
    5,745.60x = 28,707,878.57
  5. Step 5: Solve for x
    x = 28,707,878.57/5,745.60
  6. Step 6: Final answer
    x = 4,996.50

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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.