Home / 2,015.21-3,021.63-628.14

Finding the Fourth Proportional to 2,015.21, 3,021.63 and 628.14

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Solution

The fourth proportional to 2,015.21, 3,021.63 and 628.14 is: 941.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.21 : 3,021.63 = 628.14 : x
  2. Step 2: Convert to fraction form
    2,015.21/3,021.63 = 628.14/x
  3. Step 3: Cross multiply
    2,015.21x = 3,021.63 × 628.14
  4. Step 4: Simplify right side
    2,015.21x = 1,898,006.67
  5. Step 5: Solve for x
    x = 1,898,006.67/2,015.21
  6. Step 6: Final answer
    x = 941.84

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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.