Home / 2,855.67-4,281.45-1,211.31

Finding the Fourth Proportional to 2,855.67, 4,281.45 and 1,211.31

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Solution

The fourth proportional to 2,855.67, 4,281.45 and 1,211.31 is: 1,816.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.67 : 4,281.45 = 1,211.31 : x
  2. Step 2: Convert to fraction form
    2,855.67/4,281.45 = 1,211.31/x
  3. Step 3: Cross multiply
    2,855.67x = 4,281.45 × 1,211.31
  4. Step 4: Simplify right side
    2,855.67x = 5,186,163.20
  5. Step 5: Solve for x
    x = 5,186,163.20/2,855.67
  6. Step 6: Final answer
    x = 1,816.09

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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.