Home / 2,855.85-4,283.77-1,212.15

Finding the Fourth Proportional to 2,855.85, 4,283.77 and 1,212.15

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Solution

The fourth proportional to 2,855.85, 4,283.77 and 1,212.15 is: 1,818.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.85 : 4,283.77 = 1,212.15 : x
  2. Step 2: Convert to fraction form
    2,855.85/4,283.77 = 1,212.15/x
  3. Step 3: Cross multiply
    2,855.85x = 4,283.77 × 1,212.15
  4. Step 4: Simplify right side
    2,855.85x = 5,192,571.81
  5. Step 5: Solve for x
    x = 5,192,571.81/2,855.85
  6. Step 6: Final answer
    x = 1,818.22

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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.