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Finding the Fourth Proportional to 7,279.76, 10,921.94 and 2,599.67

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Solution

The fourth proportional to 7,279.76, 10,921.94 and 2,599.67 is: 3,900.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,279.76 : 10,921.94 = 2,599.67 : x
  2. Step 2: Convert to fraction form
    7,279.76/10,921.94 = 2,599.67/x
  3. Step 3: Cross multiply
    7,279.76x = 10,921.94 × 2,599.67
  4. Step 4: Simplify right side
    7,279.76x = 28,393,372.15
  5. Step 5: Solve for x
    x = 28,393,372.15/7,279.76
  6. Step 6: Final answer
    x = 3,900.32

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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.