Home / 4,778.81-7,170.33-1,857.34

Finding the Fourth Proportional to 4,778.81, 7,170.33 and 1,857.34

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Solution

The fourth proportional to 4,778.81, 7,170.33 and 1,857.34 is: 2,786.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,778.81 : 7,170.33 = 1,857.34 : x
  2. Step 2: Convert to fraction form
    4,778.81/7,170.33 = 1,857.34/x
  3. Step 3: Cross multiply
    4,778.81x = 7,170.33 × 1,857.34
  4. Step 4: Simplify right side
    4,778.81x = 13,317,704.87
  5. Step 5: Solve for x
    x = 13,317,704.87/4,778.81
  6. Step 6: Final answer
    x = 2,786.82

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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.