Home / 8,672.24-13,000.55-3,121.68

Finding the Fourth Proportional to 8,672.24, 13,000.55 and 3,121.68

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Solution

The fourth proportional to 8,672.24, 13,000.55 and 3,121.68 is: 4,679.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.24 : 13,000.55 = 3,121.68 : x
  2. Step 2: Convert to fraction form
    8,672.24/13,000.55 = 3,121.68/x
  3. Step 3: Cross multiply
    8,672.24x = 13,000.55 × 3,121.68
  4. Step 4: Simplify right side
    8,672.24x = 40,583,556.92
  5. Step 5: Solve for x
    x = 40,583,556.92/8,672.24
  6. Step 6: Final answer
    x = 4,679.71

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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.