Home / 2,021.25-3,030.80-634.20

Finding the Fourth Proportional to 2,021.25, 3,030.80 and 634.20

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Solution

The fourth proportional to 2,021.25, 3,030.80 and 634.20 is: 950.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.25 : 3,030.80 = 634.20 : x
  2. Step 2: Convert to fraction form
    2,021.25/3,030.80 = 634.20/x
  3. Step 3: Cross multiply
    2,021.25x = 3,030.80 × 634.20
  4. Step 4: Simplify right side
    2,021.25x = 1,922,141.55
  5. Step 5: Solve for x
    x = 1,922,141.55/2,021.25
  6. Step 6: Final answer
    x = 950.97

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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.