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Finding the Fourth Proportional to 6,808.40, 10,222.20 and 4,216.40

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Solution

The fourth proportional to 6,808.40, 10,222.20 and 4,216.40 is: 6,330.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,808.40 : 10,222.20 = 4,216.40 : x
  2. Step 2: Convert to fraction form
    6,808.40/10,222.20 = 4,216.40/x
  3. Step 3: Cross multiply
    6,808.40x = 10,222.20 × 4,216.40
  4. Step 4: Simplify right side
    6,808.40x = 43,100,884.08
  5. Step 5: Solve for x
    x = 43,100,884.08/6,808.40
  6. Step 6: Final answer
    x = 6,330.55

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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.