Home / 8,213.15-12,308.36-7,114.79

Finding the Fourth Proportional to 8,213.15, 12,308.36 and 7,114.79

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Solution

The fourth proportional to 8,213.15, 12,308.36 and 7,114.79 is: 10,662.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,213.15 : 12,308.36 = 7,114.79 : x
  2. Step 2: Convert to fraction form
    8,213.15/12,308.36 = 7,114.79/x
  3. Step 3: Cross multiply
    8,213.15x = 12,308.36 × 7,114.79
  4. Step 4: Simplify right side
    8,213.15x = 87,571,299.53
  5. Step 5: Solve for x
    x = 87,571,299.53/8,213.15
  6. Step 6: Final answer
    x = 10,662.33

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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.