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Finding the Fourth Proportional to 7,129.99, 10,695.27 and 2,199.67

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Solution

The fourth proportional to 7,129.99, 10,695.27 and 2,199.67 is: 3,299.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129.99 : 10,695.27 = 2,199.67 : x
  2. Step 2: Convert to fraction form
    7,129.99/10,695.27 = 2,199.67/x
  3. Step 3: Cross multiply
    7,129.99x = 10,695.27 × 2,199.67
  4. Step 4: Simplify right side
    7,129.99x = 23,526,064.56
  5. Step 5: Solve for x
    x = 23,526,064.56/7,129.99
  6. Step 6: Final answer
    x = 3,299.59

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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.