Home / 2,855.09-4,276.05-2,756.60

Finding the Fourth Proportional to 2,855.09, 4,276.05 and 2,756.60

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Solution

The fourth proportional to 2,855.09, 4,276.05 and 2,756.60 is: 4,128.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.09 : 4,276.05 = 2,756.60 : x
  2. Step 2: Convert to fraction form
    2,855.09/4,276.05 = 2,756.60/x
  3. Step 3: Cross multiply
    2,855.09x = 4,276.05 × 2,756.60
  4. Step 4: Simplify right side
    2,855.09x = 11,787,359.43
  5. Step 5: Solve for x
    x = 11,787,359.43/2,855.09
  6. Step 6: Final answer
    x = 4,128.54

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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.