Home / 2,991.32-4,127.96-1,664.96

Finding the Fourth Proportional to 2,991.32, 4,127.96 and 1,664.96

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Solution

The fourth proportional to 2,991.32, 4,127.96 and 1,664.96 is: 2,297.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.32 : 4,127.96 = 1,664.96 : x
  2. Step 2: Convert to fraction form
    2,991.32/4,127.96 = 1,664.96/x
  3. Step 3: Cross multiply
    2,991.32x = 4,127.96 × 1,664.96
  4. Step 4: Simplify right side
    2,991.32x = 6,872,888.28
  5. Step 5: Solve for x
    x = 6,872,888.28/2,991.32
  6. Step 6: Final answer
    x = 2,297.61

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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.