Home / 7,679.99-11,518.59-2,131.94

Finding the Fourth Proportional to 7,679.99, 11,518.59 and 2,131.94

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Solution

The fourth proportional to 7,679.99, 11,518.59 and 2,131.94 is: 3,197.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,679.99 : 11,518.59 = 2,131.94 : x
  2. Step 2: Convert to fraction form
    7,679.99/11,518.59 = 2,131.94/x
  3. Step 3: Cross multiply
    7,679.99x = 11,518.59 × 2,131.94
  4. Step 4: Simplify right side
    7,679.99x = 24,556,942.76
  5. Step 5: Solve for x
    x = 24,556,942.76/7,679.99
  6. Step 6: Final answer
    x = 3,197.52

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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.