Home / 7,678.09-11,457.24-6,850.67

Finding the Fourth Proportional to 7,678.09, 11,457.24 and 6,850.67

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Solution

The fourth proportional to 7,678.09, 11,457.24 and 6,850.67 is: 10,222.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,678.09 : 11,457.24 = 6,850.67 : x
  2. Step 2: Convert to fraction form
    7,678.09/11,457.24 = 6,850.67/x
  3. Step 3: Cross multiply
    7,678.09x = 11,457.24 × 6,850.67
  4. Step 4: Simplify right side
    7,678.09x = 78,489,770.35
  5. Step 5: Solve for x
    x = 78,489,770.35/7,678.09
  6. Step 6: Final answer
    x = 10,222.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.