Home / 7,811.22-10,777.78-4,453.12

Finding the Fourth Proportional to 7,811.22, 10,777.78 and 4,453.12

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Solution

The fourth proportional to 7,811.22, 10,777.78 and 4,453.12 is: 6,144.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.22 : 10,777.78 = 4,453.12 : x
  2. Step 2: Convert to fraction form
    7,811.22/10,777.78 = 4,453.12/x
  3. Step 3: Cross multiply
    7,811.22x = 10,777.78 × 4,453.12
  4. Step 4: Simplify right side
    7,811.22x = 47,994,747.67
  5. Step 5: Solve for x
    x = 47,994,747.67/7,811.22
  6. Step 6: Final answer
    x = 6,144.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.