Home / 2,855.05-4,282.58-1,211.65

Finding the Fourth Proportional to 2,855.05, 4,282.58 and 1,211.65

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Solution

The fourth proportional to 2,855.05, 4,282.58 and 1,211.65 is: 1,817.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.05 : 4,282.58 = 1,211.65 : x
  2. Step 2: Convert to fraction form
    2,855.05/4,282.58 = 1,211.65/x
  3. Step 3: Cross multiply
    2,855.05x = 4,282.58 × 1,211.65
  4. Step 4: Simplify right side
    2,855.05x = 5,188,982.00
  5. Step 5: Solve for x
    x = 5,188,982.00/2,855.05
  6. Step 6: Final answer
    x = 1,817.48

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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.