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Finding the Fourth Proportional to 3,855.04, 5,782.48 and 1,119.04

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Solution

The fourth proportional to 3,855.04, 5,782.48 and 1,119.04 is: 1,678.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.04 : 5,782.48 = 1,119.04 : x
  2. Step 2: Convert to fraction form
    3,855.04/5,782.48 = 1,119.04/x
  3. Step 3: Cross multiply
    3,855.04x = 5,782.48 × 1,119.04
  4. Step 4: Simplify right side
    3,855.04x = 6,470,826.42
  5. Step 5: Solve for x
    x = 6,470,826.42/3,855.04
  6. Step 6: Final answer
    x = 1,678.54

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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.