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Finding the Fourth Proportional to 8,556.96, 12,832.20 and 3,360

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Solution

The fourth proportional to 8,556.96, 12,832.20 and 3,360 is: 5,038.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,556.96 : 12,832.20 = 3,360 : x
  2. Step 2: Convert to fraction form
    8,556.96/12,832.20 = 3,360/x
  3. Step 3: Cross multiply
    8,556.96x = 12,832.20 × 3,360
  4. Step 4: Simplify right side
    8,556.96x = 43,116,192
  5. Step 5: Solve for x
    x = 43,116,192/8,556.96
  6. Step 6: Final answer
    x = 5,038.73

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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.