Home / 7,742.82-11,615.22-2,814.78

Finding the Fourth Proportional to 7,742.82, 11,615.22 and 2,814.78

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Solution

The fourth proportional to 7,742.82, 11,615.22 and 2,814.78 is: 4,222.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,742.82 : 11,615.22 = 2,814.78 : x
  2. Step 2: Convert to fraction form
    7,742.82/11,615.22 = 2,814.78/x
  3. Step 3: Cross multiply
    7,742.82x = 11,615.22 × 2,814.78
  4. Step 4: Simplify right side
    7,742.82x = 32,694,288.95
  5. Step 5: Solve for x
    x = 32,694,288.95/7,742.82
  6. Step 6: Final answer
    x = 4,222.53

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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.