Home / 3,138.26-4,705.77-1,289.03

Finding the Fourth Proportional to 3,138.26, 4,705.77 and 1,289.03

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Solution

The fourth proportional to 3,138.26, 4,705.77 and 1,289.03 is: 1,932.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.26 : 4,705.77 = 1,289.03 : x
  2. Step 2: Convert to fraction form
    3,138.26/4,705.77 = 1,289.03/x
  3. Step 3: Cross multiply
    3,138.26x = 4,705.77 × 1,289.03
  4. Step 4: Simplify right side
    3,138.26x = 6,065,878.70
  5. Step 5: Solve for x
    x = 6,065,878.70/3,138.26
  6. Step 6: Final answer
    x = 1,932.88

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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.