Home / 4,778.82-7,168.68-1,857.35

Finding the Fourth Proportional to 4,778.82, 7,168.68 and 1,857.35

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Solution

The fourth proportional to 4,778.82, 7,168.68 and 1,857.35 is: 2,786.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,778.82 : 7,168.68 = 1,857.35 : x
  2. Step 2: Convert to fraction form
    4,778.82/7,168.68 = 1,857.35/x
  3. Step 3: Cross multiply
    4,778.82x = 7,168.68 × 1,857.35
  4. Step 4: Simplify right side
    4,778.82x = 13,314,747.80
  5. Step 5: Solve for x
    x = 13,314,747.80/4,778.82
  6. Step 6: Final answer
    x = 2,786.20

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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.