Home / 1,908.10-2,863.50-1,127.62

Finding the Fourth Proportional to 1,908.10, 2,863.50 and 1,127.62

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Solution

The fourth proportional to 1,908.10, 2,863.50 and 1,127.62 is: 1,692.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,908.10 : 2,863.50 = 1,127.62 : x
  2. Step 2: Convert to fraction form
    1,908.10/2,863.50 = 1,127.62/x
  3. Step 3: Cross multiply
    1,908.10x = 2,863.50 × 1,127.62
  4. Step 4: Simplify right side
    1,908.10x = 3,228,939.87
  5. Step 5: Solve for x
    x = 3,228,939.87/1,908.10
  6. Step 6: Final answer
    x = 1,692.23

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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.