Home / 7,421.22-11,131.83-2,156.56

Finding the Fourth Proportional to 7,421.22, 11,131.83 and 2,156.56

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Solution

The fourth proportional to 7,421.22, 11,131.83 and 2,156.56 is: 3,234.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.22 : 11,131.83 = 2,156.56 : x
  2. Step 2: Convert to fraction form
    7,421.22/11,131.83 = 2,156.56/x
  3. Step 3: Cross multiply
    7,421.22x = 11,131.83 × 2,156.56
  4. Step 4: Simplify right side
    7,421.22x = 24,006,431.48
  5. Step 5: Solve for x
    x = 24,006,431.48/7,421.22
  6. Step 6: Final answer
    x = 3,234.84

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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.