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Finding the Fourth Proportional to 3,619.75, 4,995.30 and 1,963.75

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Solution

The fourth proportional to 3,619.75, 4,995.30 and 1,963.75 is: 2,710.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.75 : 4,995.30 = 1,963.75 : x
  2. Step 2: Convert to fraction form
    3,619.75/4,995.30 = 1,963.75/x
  3. Step 3: Cross multiply
    3,619.75x = 4,995.30 × 1,963.75
  4. Step 4: Simplify right side
    3,619.75x = 9,809,520.38
  5. Step 5: Solve for x
    x = 9,809,520.38/3,619.75
  6. Step 6: Final answer
    x = 2,710.00

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1.5x scale

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.