Home / 2,015.13-3,021.60-628.10

Finding the Fourth Proportional to 2,015.13, 3,021.60 and 628.10

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Solution

The fourth proportional to 2,015.13, 3,021.60 and 628.10 is: 941.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.13 : 3,021.60 = 628.10 : x
  2. Step 2: Convert to fraction form
    2,015.13/3,021.60 = 628.10/x
  3. Step 3: Cross multiply
    2,015.13x = 3,021.60 × 628.10
  4. Step 4: Simplify right side
    2,015.13x = 1,897,866.96
  5. Step 5: Solve for x
    x = 1,897,866.96/2,015.13
  6. Step 6: Final answer
    x = 941.81

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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.