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Finding the Fourth Proportional to 2,895.40, 3,994.41 and 1,951.80

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Solution

The fourth proportional to 2,895.40, 3,994.41 and 1,951.80 is: 2,692.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,895.40 : 3,994.41 = 1,951.80 : x
  2. Step 2: Convert to fraction form
    2,895.40/3,994.41 = 1,951.80/x
  3. Step 3: Cross multiply
    2,895.40x = 3,994.41 × 1,951.80
  4. Step 4: Simplify right side
    2,895.40x = 7,796,289.44
  5. Step 5: Solve for x
    x = 7,796,289.44/2,895.40
  6. Step 6: Final answer
    x = 2,692.65

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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.