Home / 2,021.40-3,031.32-634.44

Finding the Fourth Proportional to 2,021.40, 3,031.32 and 634.44

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Solution

The fourth proportional to 2,021.40, 3,031.32 and 634.44 is: 951.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.40 : 3,031.32 = 634.44 : x
  2. Step 2: Convert to fraction form
    2,021.40/3,031.32 = 634.44/x
  3. Step 3: Cross multiply
    2,021.40x = 3,031.32 × 634.44
  4. Step 4: Simplify right side
    2,021.40x = 1,923,190.66
  5. Step 5: Solve for x
    x = 1,923,190.66/2,021.40
  6. Step 6: Final answer
    x = 951.42

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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.