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Finding the Fourth Proportional to 2,694.60, 3,718.62 and 1,984.68

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Solution

The fourth proportional to 2,694.60, 3,718.62 and 1,984.68 is: 2,738.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,694.60 : 3,718.62 = 1,984.68 : x
  2. Step 2: Convert to fraction form
    2,694.60/3,718.62 = 1,984.68/x
  3. Step 3: Cross multiply
    2,694.60x = 3,718.62 × 1,984.68
  4. Step 4: Simplify right side
    2,694.60x = 7,380,270.74
  5. Step 5: Solve for x
    x = 7,380,270.74/2,694.60
  6. Step 6: Final answer
    x = 2,738.91

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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.