Home / 2,188.91-3,021.27-1,245.26

Finding the Fourth Proportional to 2,188.91, 3,021.27 and 1,245.26

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Solution

The fourth proportional to 2,188.91, 3,021.27 and 1,245.26 is: 1,718.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.91 : 3,021.27 = 1,245.26 : x
  2. Step 2: Convert to fraction form
    2,188.91/3,021.27 = 1,245.26/x
  3. Step 3: Cross multiply
    2,188.91x = 3,021.27 × 1,245.26
  4. Step 4: Simplify right side
    2,188.91x = 3,762,251.57
  5. Step 5: Solve for x
    x = 3,762,251.57/2,188.91
  6. Step 6: Final answer
    x = 1,718.78

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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.