Home / 7,678.80-11,517.66-2,997.95

Finding the Fourth Proportional to 7,678.80, 11,517.66 and 2,997.95

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Solution

The fourth proportional to 7,678.80, 11,517.66 and 2,997.95 is: 4,496.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,678.80 : 11,517.66 = 2,997.95 : x
  2. Step 2: Convert to fraction form
    7,678.80/11,517.66 = 2,997.95/x
  3. Step 3: Cross multiply
    7,678.80x = 11,517.66 × 2,997.95
  4. Step 4: Simplify right side
    7,678.80x = 34,529,311.21
  5. Step 5: Solve for x
    x = 34,529,311.21/7,678.80
  6. Step 6: Final answer
    x = 4,496.71

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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.