Home / 8,204.12-11,321.70-4,478.12

Finding the Fourth Proportional to 8,204.12, 11,321.70 and 4,478.12

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Solution

The fourth proportional to 8,204.12, 11,321.70 and 4,478.12 is: 6,179.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,204.12 : 11,321.70 = 4,478.12 : x
  2. Step 2: Convert to fraction form
    8,204.12/11,321.70 = 4,478.12/x
  3. Step 3: Cross multiply
    8,204.12x = 11,321.70 × 4,478.12
  4. Step 4: Simplify right side
    8,204.12x = 50,699,931.20
  5. Step 5: Solve for x
    x = 50,699,931.20/8,204.12
  6. Step 6: Final answer
    x = 6,179.81

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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.