Home / 8,161.20-12,228.60-7,383.60

Finding the Fourth Proportional to 8,161.20, 12,228.60 and 7,383.60

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Solution

The fourth proportional to 8,161.20, 12,228.60 and 7,383.60 is: 11,063.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,161.20 : 12,228.60 = 7,383.60 : x
  2. Step 2: Convert to fraction form
    8,161.20/12,228.60 = 7,383.60/x
  3. Step 3: Cross multiply
    8,161.20x = 12,228.60 × 7,383.60
  4. Step 4: Simplify right side
    8,161.20x = 90,291,090.96
  5. Step 5: Solve for x
    x = 90,291,090.96/8,161.20
  6. Step 6: Final answer
    x = 11,063.46

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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.