Home / 8,109.44-12,160.37-4,212.80

Finding the Fourth Proportional to 8,109.44, 12,160.37 and 4,212.80

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Solution

The fourth proportional to 8,109.44, 12,160.37 and 4,212.80 is: 6,317.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.44 : 12,160.37 = 4,212.80 : x
  2. Step 2: Convert to fraction form
    8,109.44/12,160.37 = 4,212.80/x
  3. Step 3: Cross multiply
    8,109.44x = 12,160.37 × 4,212.80
  4. Step 4: Simplify right side
    8,109.44x = 51,229,156.47
  5. Step 5: Solve for x
    x = 51,229,156.47/8,109.44
  6. Step 6: Final answer
    x = 6,317.23

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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.