Home / 7,279.88-10,911.78-3,770.15

Finding the Fourth Proportional to 7,279.88, 10,911.78 and 3,770.15

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Solution

The fourth proportional to 7,279.88, 10,911.78 and 3,770.15 is: 5,651.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,279.88 : 10,911.78 = 3,770.15 : x
  2. Step 2: Convert to fraction form
    7,279.88/10,911.78 = 3,770.15/x
  3. Step 3: Cross multiply
    7,279.88x = 10,911.78 × 3,770.15
  4. Step 4: Simplify right side
    7,279.88x = 41,138,992.81
  5. Step 5: Solve for x
    x = 41,138,992.81/7,279.88
  6. Step 6: Final answer
    x = 5,651.06

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1.5x scale

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.