Home / 3,391.80-5,087.70-2,845.05

Finding the Fourth Proportional to 3,391.80, 5,087.70 and 2,845.05

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Solution

The fourth proportional to 3,391.80, 5,087.70 and 2,845.05 is: 4,267.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.80 : 5,087.70 = 2,845.05 : x
  2. Step 2: Convert to fraction form
    3,391.80/5,087.70 = 2,845.05/x
  3. Step 3: Cross multiply
    3,391.80x = 5,087.70 × 2,845.05
  4. Step 4: Simplify right side
    3,391.80x = 14,474,760.89
  5. Step 5: Solve for x
    x = 14,474,760.89/3,391.80
  6. Step 6: Final answer
    x = 4,267.58

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Similar ratio
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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.