Home / 2,855.45-4,283.62-1,212.44

Finding the Fourth Proportional to 2,855.45, 4,283.62 and 1,212.44

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Solution

The fourth proportional to 2,855.45, 4,283.62 and 1,212.44 is: 1,818.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.45 : 4,283.62 = 1,212.44 : x
  2. Step 2: Convert to fraction form
    2,855.45/4,283.62 = 1,212.44/x
  3. Step 3: Cross multiply
    2,855.45x = 4,283.62 × 1,212.44
  4. Step 4: Simplify right side
    2,855.45x = 5,193,607.78
  5. Step 5: Solve for x
    x = 5,193,607.78/2,855.45
  6. Step 6: Final answer
    x = 1,818.84

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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.