Home / 1,991.14-2,984.37-1,113.43

Finding the Fourth Proportional to 1,991.14, 2,984.37 and 1,113.43

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Solution

The fourth proportional to 1,991.14, 2,984.37 and 1,113.43 is: 1,668.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991.14 : 2,984.37 = 1,113.43 : x
  2. Step 2: Convert to fraction form
    1,991.14/2,984.37 = 1,113.43/x
  3. Step 3: Cross multiply
    1,991.14x = 2,984.37 × 1,113.43
  4. Step 4: Simplify right side
    1,991.14x = 3,322,887.09
  5. Step 5: Solve for x
    x = 3,322,887.09/1,991.14
  6. Step 6: Final answer
    x = 1,668.84

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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.