Home / 2,133.19-2,943.80-1,188.97

Finding the Fourth Proportional to 2,133.19, 2,943.80 and 1,188.97

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Solution

The fourth proportional to 2,133.19, 2,943.80 and 1,188.97 is: 1,640.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,133.19 : 2,943.80 = 1,188.97 : x
  2. Step 2: Convert to fraction form
    2,133.19/2,943.80 = 1,188.97/x
  3. Step 3: Cross multiply
    2,133.19x = 2,943.80 × 1,188.97
  4. Step 4: Simplify right side
    2,133.19x = 3,500,091.79
  5. Step 5: Solve for x
    x = 3,500,091.79/2,133.19
  6. Step 6: Final answer
    x = 1,640.78

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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.