Home / 4,128.82-6,189.15-2,643.81

Finding the Fourth Proportional to 4,128.82, 6,189.15 and 2,643.81

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Solution

The fourth proportional to 4,128.82, 6,189.15 and 2,643.81 is: 3,963.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.82 : 6,189.15 = 2,643.81 : x
  2. Step 2: Convert to fraction form
    4,128.82/6,189.15 = 2,643.81/x
  3. Step 3: Cross multiply
    4,128.82x = 6,189.15 × 2,643.81
  4. Step 4: Simplify right side
    4,128.82x = 16,362,936.66
  5. Step 5: Solve for x
    x = 16,362,936.66/4,128.82
  6. Step 6: Final answer
    x = 3,963.11

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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.