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Finding the Fourth Proportional to 7,697.80, 11,546.70 and 2,767.60

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Solution

The fourth proportional to 7,697.80, 11,546.70 and 2,767.60 is: 4,151.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,697.80 : 11,546.70 = 2,767.60 : x
  2. Step 2: Convert to fraction form
    7,697.80/11,546.70 = 2,767.60/x
  3. Step 3: Cross multiply
    7,697.80x = 11,546.70 × 2,767.60
  4. Step 4: Simplify right side
    7,697.80x = 31,956,646.92
  5. Step 5: Solve for x
    x = 31,956,646.92/7,697.80
  6. Step 6: Final answer
    x = 4,151.40

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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.