Home / 8,778.21-13,141.47-5,481.30

Finding the Fourth Proportional to 8,778.21, 13,141.47 and 5,481.30

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Solution

The fourth proportional to 8,778.21, 13,141.47 and 5,481.30 is: 8,205.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,778.21 : 13,141.47 = 5,481.30 : x
  2. Step 2: Convert to fraction form
    8,778.21/13,141.47 = 5,481.30/x
  3. Step 3: Cross multiply
    8,778.21x = 13,141.47 × 5,481.30
  4. Step 4: Simplify right side
    8,778.21x = 72,032,409.35
  5. Step 5: Solve for x
    x = 72,032,409.35/8,778.21
  6. Step 6: Final answer
    x = 8,205.82

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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.