Home / 2,991.15-4,127.78-1,664.97

Finding the Fourth Proportional to 2,991.15, 4,127.78 and 1,664.97

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Solution

The fourth proportional to 2,991.15, 4,127.78 and 1,664.97 is: 2,297.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.15 : 4,127.78 = 1,664.97 : x
  2. Step 2: Convert to fraction form
    2,991.15/4,127.78 = 1,664.97/x
  3. Step 3: Cross multiply
    2,991.15x = 4,127.78 × 1,664.97
  4. Step 4: Simplify right side
    2,991.15x = 6,872,634.03
  5. Step 5: Solve for x
    x = 6,872,634.03/2,991.15
  6. Step 6: Final answer
    x = 2,297.66

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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.