Home / 1,991.39-2,982.22-1,373.36

Finding the Fourth Proportional to 1,991.39, 2,982.22 and 1,373.36

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Solution

The fourth proportional to 1,991.39, 2,982.22 and 1,373.36 is: 2,056.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991.39 : 2,982.22 = 1,373.36 : x
  2. Step 2: Convert to fraction form
    1,991.39/2,982.22 = 1,373.36/x
  3. Step 3: Cross multiply
    1,991.39x = 2,982.22 × 1,373.36
  4. Step 4: Simplify right side
    1,991.39x = 4,095,661.66
  5. Step 5: Solve for x
    x = 4,095,661.66/1,991.39
  6. Step 6: Final answer
    x = 2,056.68

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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.