Home / 1,391.08-2,083.87-1,131.37

Finding the Fourth Proportional to 1,391.08, 2,083.87 and 1,131.37

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Solution

The fourth proportional to 1,391.08, 2,083.87 and 1,131.37 is: 1,694.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391.08 : 2,083.87 = 1,131.37 : x
  2. Step 2: Convert to fraction form
    1,391.08/2,083.87 = 1,131.37/x
  3. Step 3: Cross multiply
    1,391.08x = 2,083.87 × 1,131.37
  4. Step 4: Simplify right side
    1,391.08x = 2,357,628.00
  5. Step 5: Solve for x
    x = 2,357,628.00/1,391.08
  6. Step 6: Final answer
    x = 1,694.82

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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.