Home / 2,855.40-4,282.08-1,212.06

Finding the Fourth Proportional to 2,855.40, 4,282.08 and 1,212.06

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Solution

The fourth proportional to 2,855.40, 4,282.08 and 1,212.06 is: 1,817.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.40 : 4,282.08 = 1,212.06 : x
  2. Step 2: Convert to fraction form
    2,855.40/4,282.08 = 1,212.06/x
  3. Step 3: Cross multiply
    2,855.40x = 4,282.08 × 1,212.06
  4. Step 4: Simplify right side
    2,855.40x = 5,190,137.88
  5. Step 5: Solve for x
    x = 5,190,137.88/2,855.40
  6. Step 6: Final answer
    x = 1,817.66

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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.