Home / 1,986.14-2,740.73-1,135.41

Finding the Fourth Proportional to 1,986.14, 2,740.73 and 1,135.41

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Solution

The fourth proportional to 1,986.14, 2,740.73 and 1,135.41 is: 1,566.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.14 : 2,740.73 = 1,135.41 : x
  2. Step 2: Convert to fraction form
    1,986.14/2,740.73 = 1,135.41/x
  3. Step 3: Cross multiply
    1,986.14x = 2,740.73 × 1,135.41
  4. Step 4: Simplify right side
    1,986.14x = 3,111,852.25
  5. Step 5: Solve for x
    x = 3,111,852.25/1,986.14
  6. Step 6: Final answer
    x = 1,566.78

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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.