Home / 5,118.49-7,678.46-1,786.26

Finding the Fourth Proportional to 5,118.49, 7,678.46 and 1,786.26

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Solution

The fourth proportional to 5,118.49, 7,678.46 and 1,786.26 is: 2,679.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.49 : 7,678.46 = 1,786.26 : x
  2. Step 2: Convert to fraction form
    5,118.49/7,678.46 = 1,786.26/x
  3. Step 3: Cross multiply
    5,118.49x = 7,678.46 × 1,786.26
  4. Step 4: Simplify right side
    5,118.49x = 13,715,694.93
  5. Step 5: Solve for x
    x = 13,715,694.93/5,118.49
  6. Step 6: Final answer
    x = 2,679.64

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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.