Home / 2,609.82-3,917.03-1,378.06

Finding the Fourth Proportional to 2,609.82, 3,917.03 and 1,378.06

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Solution

The fourth proportional to 2,609.82, 3,917.03 and 1,378.06 is: 2,068.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,609.82 : 3,917.03 = 1,378.06 : x
  2. Step 2: Convert to fraction form
    2,609.82/3,917.03 = 1,378.06/x
  3. Step 3: Cross multiply
    2,609.82x = 3,917.03 × 1,378.06
  4. Step 4: Simplify right side
    2,609.82x = 5,397,885.68
  5. Step 5: Solve for x
    x = 5,397,885.68/2,609.82
  6. Step 6: Final answer
    x = 2,068.30

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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.