Home / 2,855.05-4,281.83-1,210.75

Finding the Fourth Proportional to 2,855.05, 4,281.83 and 1,210.75

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Solution

The fourth proportional to 2,855.05, 4,281.83 and 1,210.75 is: 1,815.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.05 : 4,281.83 = 1,210.75 : x
  2. Step 2: Convert to fraction form
    2,855.05/4,281.83 = 1,210.75/x
  3. Step 3: Cross multiply
    2,855.05x = 4,281.83 × 1,210.75
  4. Step 4: Simplify right side
    2,855.05x = 5,184,198.21
  5. Step 5: Solve for x
    x = 5,184,198.21/2,855.05
  6. Step 6: Final answer
    x = 1,815.80

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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.