Home / 6,512.20-9,770.70-2,129.80

Finding the Fourth Proportional to 6,512.20, 9,770.70 and 2,129.80

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Solution

The fourth proportional to 6,512.20, 9,770.70 and 2,129.80 is: 3,195.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,512.20 : 9,770.70 = 2,129.80 : x
  2. Step 2: Convert to fraction form
    6,512.20/9,770.70 = 2,129.80/x
  3. Step 3: Cross multiply
    6,512.20x = 9,770.70 × 2,129.80
  4. Step 4: Simplify right side
    6,512.20x = 20,809,636.86
  5. Step 5: Solve for x
    x = 20,809,636.86/6,512.20
  6. Step 6: Final answer
    x = 3,195.48

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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.