Home / 6,918.30-10,378.80-2,757.60

Finding the Fourth Proportional to 6,918.30, 10,378.80 and 2,757.60

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Solution

The fourth proportional to 6,918.30, 10,378.80 and 2,757.60 is: 4,136.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,918.30 : 10,378.80 = 2,757.60 : x
  2. Step 2: Convert to fraction form
    6,918.30/10,378.80 = 2,757.60/x
  3. Step 3: Cross multiply
    6,918.30x = 10,378.80 × 2,757.60
  4. Step 4: Simplify right side
    6,918.30x = 28,620,578.88
  5. Step 5: Solve for x
    x = 28,620,578.88/6,918.30
  6. Step 6: Final answer
    x = 4,136.94

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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.