Home / 3,855.12-5,777.87-2,005.14

Finding the Fourth Proportional to 3,855.12, 5,777.87 and 2,005.14

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Solution

The fourth proportional to 3,855.12, 5,777.87 and 2,005.14 is: 3,005.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.12 : 5,777.87 = 2,005.14 : x
  2. Step 2: Convert to fraction form
    3,855.12/5,777.87 = 2,005.14/x
  3. Step 3: Cross multiply
    3,855.12x = 5,777.87 × 2,005.14
  4. Step 4: Simplify right side
    3,855.12x = 11,585,438.25
  5. Step 5: Solve for x
    x = 11,585,438.25/3,855.12
  6. Step 6: Final answer
    x = 3,005.21

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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.