Home / 1,857.92-2,786.73-1,127.30

Finding the Fourth Proportional to 1,857.92, 2,786.73 and 1,127.30

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Solution

The fourth proportional to 1,857.92, 2,786.73 and 1,127.30 is: 1,690.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,857.92 : 2,786.73 = 1,127.30 : x
  2. Step 2: Convert to fraction form
    1,857.92/2,786.73 = 1,127.30/x
  3. Step 3: Cross multiply
    1,857.92x = 2,786.73 × 1,127.30
  4. Step 4: Simplify right side
    1,857.92x = 3,141,480.73
  5. Step 5: Solve for x
    x = 3,141,480.73/1,857.92
  6. Step 6: Final answer
    x = 1,690.86

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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.