Home / 2,109.03-3,162.98-628.26

Finding the Fourth Proportional to 2,109.03, 3,162.98 and 628.26

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Solution

The fourth proportional to 2,109.03, 3,162.98 and 628.26 is: 942.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,109.03 : 3,162.98 = 628.26 : x
  2. Step 2: Convert to fraction form
    2,109.03/3,162.98 = 628.26/x
  3. Step 3: Cross multiply
    2,109.03x = 3,162.98 × 628.26
  4. Step 4: Simplify right side
    2,109.03x = 1,987,170.67
  5. Step 5: Solve for x
    x = 1,987,170.67/2,109.03
  6. Step 6: Final answer
    x = 942.22

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1.5x scale

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.