Home / 8,618.63-12,917.48-3,932.21

Finding the Fourth Proportional to 8,618.63, 12,917.48 and 3,932.21

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Solution

The fourth proportional to 8,618.63, 12,917.48 and 3,932.21 is: 5,893.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,618.63 : 12,917.48 = 3,932.21 : x
  2. Step 2: Convert to fraction form
    8,618.63/12,917.48 = 3,932.21/x
  3. Step 3: Cross multiply
    8,618.63x = 12,917.48 × 3,932.21
  4. Step 4: Simplify right side
    8,618.63x = 50,794,159.78
  5. Step 5: Solve for x
    x = 50,794,159.78/8,618.63
  6. Step 6: Final answer
    x = 5,893.53

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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.