Home / 3,786.80-5,669.40-2,328.80

Finding the Fourth Proportional to 3,786.80, 5,669.40 and 2,328.80

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Solution

The fourth proportional to 3,786.80, 5,669.40 and 2,328.80 is: 3,486.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,786.80 : 5,669.40 = 2,328.80 : x
  2. Step 2: Convert to fraction form
    3,786.80/5,669.40 = 2,328.80/x
  3. Step 3: Cross multiply
    3,786.80x = 5,669.40 × 2,328.80
  4. Step 4: Simplify right side
    3,786.80x = 13,202,898.72
  5. Step 5: Solve for x
    x = 13,202,898.72/3,786.80
  6. Step 6: Final answer
    x = 3,486.56

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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.