Home / 1,984.50-2,738.61-1,198.70

Finding the Fourth Proportional to 1,984.50, 2,738.61 and 1,198.70

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Solution

The fourth proportional to 1,984.50, 2,738.61 and 1,198.70 is: 1,654.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984.50 : 2,738.61 = 1,198.70 : x
  2. Step 2: Convert to fraction form
    1,984.50/2,738.61 = 1,198.70/x
  3. Step 3: Cross multiply
    1,984.50x = 2,738.61 × 1,198.70
  4. Step 4: Simplify right side
    1,984.50x = 3,282,768.38
  5. Step 5: Solve for x
    x = 3,282,768.38/1,984.50
  6. Step 6: Final answer
    x = 1,654.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.