Home / 7,811.22-11,716.76-3,915.56

Finding the Fourth Proportional to 7,811.22, 11,716.76 and 3,915.56

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Solution

The fourth proportional to 7,811.22, 11,716.76 and 3,915.56 is: 5,873.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.22 : 11,716.76 = 3,915.56 : x
  2. Step 2: Convert to fraction form
    7,811.22/11,716.76 = 3,915.56/x
  3. Step 3: Cross multiply
    7,811.22x = 11,716.76 × 3,915.56
  4. Step 4: Simplify right side
    7,811.22x = 45,877,676.79
  5. Step 5: Solve for x
    x = 45,877,676.79/7,811.22
  6. Step 6: Final answer
    x = 5,873.30

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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.