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Finding the Fourth Proportional to 1,988.44, 2,744.22 and 1,694.68

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Solution

The fourth proportional to 1,988.44, 2,744.22 and 1,694.68 is: 2,338.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.44 : 2,744.22 = 1,694.68 : x
  2. Step 2: Convert to fraction form
    1,988.44/2,744.22 = 1,694.68/x
  3. Step 3: Cross multiply
    1,988.44x = 2,744.22 × 1,694.68
  4. Step 4: Simplify right side
    1,988.44x = 4,650,574.75
  5. Step 5: Solve for x
    x = 4,650,574.75/1,988.44
  6. Step 6: Final answer
    x = 2,338.81

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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.