Home / 2,845.56-4,270.20-1,286.40

Finding the Fourth Proportional to 2,845.56, 4,270.20 and 1,286.40

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Solution

The fourth proportional to 2,845.56, 4,270.20 and 1,286.40 is: 1,930.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,845.56 : 4,270.20 = 1,286.40 : x
  2. Step 2: Convert to fraction form
    2,845.56/4,270.20 = 1,286.40/x
  3. Step 3: Cross multiply
    2,845.56x = 4,270.20 × 1,286.40
  4. Step 4: Simplify right side
    2,845.56x = 5,493,185.28
  5. Step 5: Solve for x
    x = 5,493,185.28/2,845.56
  6. Step 6: Final answer
    x = 1,930.44

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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.