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Finding the Fourth Proportional to 3,619.88, 4,995.43 and 1,963.88

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Solution

The fourth proportional to 3,619.88, 4,995.43 and 1,963.88 is: 2,710.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.88 : 4,995.43 = 1,963.88 : x
  2. Step 2: Convert to fraction form
    3,619.88/4,995.43 = 1,963.88/x
  3. Step 3: Cross multiply
    3,619.88x = 4,995.43 × 1,963.88
  4. Step 4: Simplify right side
    3,619.88x = 9,810,395.18
  5. Step 5: Solve for x
    x = 9,810,395.18/3,619.88
  6. Step 6: Final answer
    x = 2,710.15

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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.