Home / 1,940.13-2,678.36-1,313.96

Finding the Fourth Proportional to 1,940.13, 2,678.36 and 1,313.96

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Solution

The fourth proportional to 1,940.13, 2,678.36 and 1,313.96 is: 1,813.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940.13 : 2,678.36 = 1,313.96 : x
  2. Step 2: Convert to fraction form
    1,940.13/2,678.36 = 1,313.96/x
  3. Step 3: Cross multiply
    1,940.13x = 2,678.36 × 1,313.96
  4. Step 4: Simplify right side
    1,940.13x = 3,519,237.94
  5. Step 5: Solve for x
    x = 3,519,237.94/1,940.13
  6. Step 6: Final answer
    x = 1,813.92

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Why These Related Problems?

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