Home / 2,617.80-3,926.70-1,961.70

Finding the Fourth Proportional to 2,617.80, 3,926.70 and 1,961.70

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Solution

The fourth proportional to 2,617.80, 3,926.70 and 1,961.70 is: 2,942.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,617.80 : 3,926.70 = 1,961.70 : x
  2. Step 2: Convert to fraction form
    2,617.80/3,926.70 = 1,961.70/x
  3. Step 3: Cross multiply
    2,617.80x = 3,926.70 × 1,961.70
  4. Step 4: Simplify right side
    2,617.80x = 7,703,007.39
  5. Step 5: Solve for x
    x = 7,703,007.39/2,617.80
  6. Step 6: Final answer
    x = 2,942.55

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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.