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Finding the Fourth Proportional to 1,921.50, 2,651.79 and 1,093.50

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Solution

The fourth proportional to 1,921.50, 2,651.79 and 1,093.50 is: 1,509.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.50 : 2,651.79 = 1,093.50 : x
  2. Step 2: Convert to fraction form
    1,921.50/2,651.79 = 1,093.50/x
  3. Step 3: Cross multiply
    1,921.50x = 2,651.79 × 1,093.50
  4. Step 4: Simplify right side
    1,921.50x = 2,899,732.37
  5. Step 5: Solve for x
    x = 2,899,732.37/1,921.50
  6. Step 6: Final answer
    x = 1,509.10

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.