Home / 5,190-7,786.26-1,727.25

Finding the Fourth Proportional to 5,190, 7,786.26 and 1,727.25

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Solution

The fourth proportional to 5,190, 7,786.26 and 1,727.25 is: 2,591.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190 : 7,786.26 = 1,727.25 : x
  2. Step 2: Convert to fraction form
    5,190/7,786.26 = 1,727.25/x
  3. Step 3: Cross multiply
    5,190x = 7,786.26 × 1,727.25
  4. Step 4: Simplify right side
    5,190x = 13,448,817.59
  5. Step 5: Solve for x
    x = 13,448,817.59/5,190
  6. Step 6: Final answer
    x = 2,591.29

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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.