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Finding the Fourth Proportional to 1,955.94, 2,919.92 and 1,887.56

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Solution

The fourth proportional to 1,955.94, 2,919.92 and 1,887.56 is: 2,817.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,955.94 : 2,919.92 = 1,887.56 : x
  2. Step 2: Convert to fraction form
    1,955.94/2,919.92 = 1,887.56/x
  3. Step 3: Cross multiply
    1,955.94x = 2,919.92 × 1,887.56
  4. Step 4: Simplify right side
    1,955.94x = 5,511,524.20
  5. Step 5: Solve for x
    x = 5,511,524.20/1,955.94
  6. Step 6: Final answer
    x = 2,817.84

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.