Home / 3,012.26-4,518.38-820.98

Finding the Fourth Proportional to 3,012.26, 4,518.38 and 820.98

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Solution

The fourth proportional to 3,012.26, 4,518.38 and 820.98 is: 1,231.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,012.26 : 4,518.38 = 820.98 : x
  2. Step 2: Convert to fraction form
    3,012.26/4,518.38 = 820.98/x
  3. Step 3: Cross multiply
    3,012.26x = 4,518.38 × 820.98
  4. Step 4: Simplify right side
    3,012.26x = 3,709,499.61
  5. Step 5: Solve for x
    x = 3,709,499.61/3,012.26
  6. Step 6: Final answer
    x = 1,231.47

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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.