Home / 3,012.23-4,518.38-821.00

Finding the Fourth Proportional to 3,012.23, 4,518.38 and 821.00

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Solution

The fourth proportional to 3,012.23, 4,518.38 and 821.00 is: 1,231.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,012.23 : 4,518.38 = 821.00 : x
  2. Step 2: Convert to fraction form
    3,012.23/4,518.38 = 821.00/x
  3. Step 3: Cross multiply
    3,012.23x = 4,518.38 × 821.00
  4. Step 4: Simplify right side
    3,012.23x = 3,709,603.33
  5. Step 5: Solve for x
    x = 3,709,603.33/3,012.23
  6. Step 6: Final answer
    x = 1,231.51

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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.