Home / 8,109.33-12,142.94-6,946.80

Finding the Fourth Proportional to 8,109.33, 12,142.94 and 6,946.80

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Solution

The fourth proportional to 8,109.33, 12,142.94 and 6,946.80 is: 10,402.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.33 : 12,142.94 = 6,946.80 : x
  2. Step 2: Convert to fraction form
    8,109.33/12,142.94 = 6,946.80/x
  3. Step 3: Cross multiply
    8,109.33x = 12,142.94 × 6,946.80
  4. Step 4: Simplify right side
    8,109.33x = 84,354,540.86
  5. Step 5: Solve for x
    x = 84,354,540.86/8,109.33
  6. Step 6: Final answer
    x = 10,402.16

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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.