Home / 5,185.56-7,778.34-1,722.81

Finding the Fourth Proportional to 5,185.56, 7,778.34 and 1,722.81

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Solution

The fourth proportional to 5,185.56, 7,778.34 and 1,722.81 is: 2,584.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.56 : 7,778.34 = 1,722.81 : x
  2. Step 2: Convert to fraction form
    5,185.56/7,778.34 = 1,722.81/x
  3. Step 3: Cross multiply
    5,185.56x = 7,778.34 × 1,722.81
  4. Step 4: Simplify right side
    5,185.56x = 13,400,601.94
  5. Step 5: Solve for x
    x = 13,400,601.94/5,185.56
  6. Step 6: Final answer
    x = 2,584.22

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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.