Home / 7,678.22-11,457.42-6,850.80

Finding the Fourth Proportional to 7,678.22, 11,457.42 and 6,850.80

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Solution

The fourth proportional to 7,678.22, 11,457.42 and 6,850.80 is: 10,222.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,678.22 : 11,457.42 = 6,850.80 : x
  2. Step 2: Convert to fraction form
    7,678.22/11,457.42 = 6,850.80/x
  3. Step 3: Cross multiply
    7,678.22x = 11,457.42 × 6,850.80
  4. Step 4: Simplify right side
    7,678.22x = 78,492,492.94
  5. Step 5: Solve for x
    x = 78,492,492.94/7,678.22
  6. Step 6: Final answer
    x = 10,222.75

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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.