Home / 2,991.16-4,127.81-1,664.87

Finding the Fourth Proportional to 2,991.16, 4,127.81 and 1,664.87

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Solution

The fourth proportional to 2,991.16, 4,127.81 and 1,664.87 is: 2,297.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.16 : 4,127.81 = 1,664.87 : x
  2. Step 2: Convert to fraction form
    2,991.16/4,127.81 = 1,664.87/x
  3. Step 3: Cross multiply
    2,991.16x = 4,127.81 × 1,664.87
  4. Step 4: Simplify right side
    2,991.16x = 6,872,257.83
  5. Step 5: Solve for x
    x = 6,872,257.83/2,991.16
  6. Step 6: Final answer
    x = 2,297.52

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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.