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Finding the Fourth Proportional to 7,279.03, 10,919.12 and 2,600.05

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Solution

The fourth proportional to 7,279.03, 10,919.12 and 2,600.05 is: 3,900.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,279.03 : 10,919.12 = 2,600.05 : x
  2. Step 2: Convert to fraction form
    7,279.03/10,919.12 = 2,600.05/x
  3. Step 3: Cross multiply
    7,279.03x = 10,919.12 × 2,600.05
  4. Step 4: Simplify right side
    7,279.03x = 28,390,244.96
  5. Step 5: Solve for x
    x = 28,390,244.96/7,279.03
  6. Step 6: Final answer
    x = 3,900.28

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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.