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Finding the Fourth Proportional to 4,918.56, 6,786 and 2,793.84

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Solution

The fourth proportional to 4,918.56, 6,786 and 2,793.84 is: 3,854.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,918.56 : 6,786 = 2,793.84 : x
  2. Step 2: Convert to fraction form
    4,918.56/6,786 = 2,793.84/x
  3. Step 3: Cross multiply
    4,918.56x = 6,786 × 2,793.84
  4. Step 4: Simplify right side
    4,918.56x = 18,958,998.24
  5. Step 5: Solve for x
    x = 18,958,998.24/4,918.56
  6. Step 6: Final answer
    x = 3,854.58

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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.