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Finding the Fourth Proportional to 4,620.96, 6,936.88 and 3,888.80

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Solution

The fourth proportional to 4,620.96, 6,936.88 and 3,888.80 is: 5,837.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,620.96 : 6,936.88 = 3,888.80 : x
  2. Step 2: Convert to fraction form
    4,620.96/6,936.88 = 3,888.80/x
  3. Step 3: Cross multiply
    4,620.96x = 6,936.88 × 3,888.80
  4. Step 4: Simplify right side
    4,620.96x = 26,976,138.94
  5. Step 5: Solve for x
    x = 26,976,138.94/4,620.96
  6. Step 6: Final answer
    x = 5,837.78

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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.