Home / 3,784.87-5,675.68-1,318.96

Finding the Fourth Proportional to 3,784.87, 5,675.68 and 1,318.96

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Solution

The fourth proportional to 3,784.87, 5,675.68 and 1,318.96 is: 1,977.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,784.87 : 5,675.68 = 1,318.96 : x
  2. Step 2: Convert to fraction form
    3,784.87/5,675.68 = 1,318.96/x
  3. Step 3: Cross multiply
    3,784.87x = 5,675.68 × 1,318.96
  4. Step 4: Simplify right side
    3,784.87x = 7,485,982.35
  5. Step 5: Solve for x
    x = 7,485,982.35/3,784.87
  6. Step 6: Final answer
    x = 1,977.87

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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.