Home / 2,991.52-4,127.79-1,665.22

Finding the Fourth Proportional to 2,991.52, 4,127.79 and 1,665.22

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Solution

The fourth proportional to 2,991.52, 4,127.79 and 1,665.22 is: 2,297.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.52 : 4,127.79 = 1,665.22 : x
  2. Step 2: Convert to fraction form
    2,991.52/4,127.79 = 1,665.22/x
  3. Step 3: Cross multiply
    2,991.52x = 4,127.79 × 1,665.22
  4. Step 4: Simplify right side
    2,991.52x = 6,873,657.82
  5. Step 5: Solve for x
    x = 6,873,657.82/2,991.52
  6. Step 6: Final answer
    x = 2,297.71

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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.