Home / 2,885.72-3,982.38-1,609.64

Finding the Fourth Proportional to 2,885.72, 3,982.38 and 1,609.64

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Solution

The fourth proportional to 2,885.72, 3,982.38 and 1,609.64 is: 2,221.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,885.72 : 3,982.38 = 1,609.64 : x
  2. Step 2: Convert to fraction form
    2,885.72/3,982.38 = 1,609.64/x
  3. Step 3: Cross multiply
    2,885.72x = 3,982.38 × 1,609.64
  4. Step 4: Simplify right side
    2,885.72x = 6,410,198.14
  5. Step 5: Solve for x
    x = 6,410,198.14/2,885.72
  6. Step 6: Final answer
    x = 2,221.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.