Home / 7,878.54-11,817.56-3,198.42

Finding the Fourth Proportional to 7,878.54, 11,817.56 and 3,198.42

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Solution

The fourth proportional to 7,878.54, 11,817.56 and 3,198.42 is: 4,797.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,878.54 : 11,817.56 = 3,198.42 : x
  2. Step 2: Convert to fraction form
    7,878.54/11,817.56 = 3,198.42/x
  3. Step 3: Cross multiply
    7,878.54x = 11,817.56 × 3,198.42
  4. Step 4: Simplify right side
    7,878.54x = 37,797,520.26
  5. Step 5: Solve for x
    x = 37,797,520.26/7,878.54
  6. Step 6: Final answer
    x = 4,797.53

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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.