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Finding the Fourth Proportional to 4,855.60, 7,288.80 and 3,764.80

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Solution

The fourth proportional to 4,855.60, 7,288.80 and 3,764.80 is: 5,651.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,855.60 : 7,288.80 = 3,764.80 : x
  2. Step 2: Convert to fraction form
    4,855.60/7,288.80 = 3,764.80/x
  3. Step 3: Cross multiply
    4,855.60x = 7,288.80 × 3,764.80
  4. Step 4: Simplify right side
    4,855.60x = 27,440,874.24
  5. Step 5: Solve for x
    x = 27,440,874.24/4,855.60
  6. Step 6: Final answer
    x = 5,651.39

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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.