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Finding the Fourth Proportional to 7,012.72, 10,518.06 and 2,081.44

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Solution

The fourth proportional to 7,012.72, 10,518.06 and 2,081.44 is: 3,121.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,012.72 : 10,518.06 = 2,081.44 : x
  2. Step 2: Convert to fraction form
    7,012.72/10,518.06 = 2,081.44/x
  3. Step 3: Cross multiply
    7,012.72x = 10,518.06 × 2,081.44
  4. Step 4: Simplify right side
    7,012.72x = 21,892,710.81
  5. Step 5: Solve for x
    x = 21,892,710.81/7,012.72
  6. Step 6: Final answer
    x = 3,121.86

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.