Home / 11,078.75-16,619.78-3,579.80

Finding the Fourth Proportional to 11,078.75, 16,619.78 and 3,579.80

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Solution

The fourth proportional to 11,078.75, 16,619.78 and 3,579.80 is: 5,370.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,078.75 : 16,619.78 = 3,579.80 : x
  2. Step 2: Convert to fraction form
    11,078.75/16,619.78 = 3,579.80/x
  3. Step 3: Cross multiply
    11,078.75x = 16,619.78 × 3,579.80
  4. Step 4: Simplify right side
    11,078.75x = 59,495,387.45
  5. Step 5: Solve for x
    x = 59,495,387.45/11,078.75
  6. Step 6: Final answer
    x = 5,370.23

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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.