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Finding the Fourth Proportional to 1,903.82, 2,856.42 and 1,382.94

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Solution

The fourth proportional to 1,903.82, 2,856.42 and 1,382.94 is: 2,074.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,903.82 : 2,856.42 = 1,382.94 : x
  2. Step 2: Convert to fraction form
    1,903.82/2,856.42 = 1,382.94/x
  3. Step 3: Cross multiply
    1,903.82x = 2,856.42 × 1,382.94
  4. Step 4: Simplify right side
    1,903.82x = 3,950,268.19
  5. Step 5: Solve for x
    x = 3,950,268.19/1,903.82
  6. Step 6: Final answer
    x = 2,074.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.