Home / 6,514.40-9,771.50-2,131.86

Finding the Fourth Proportional to 6,514.40, 9,771.50 and 2,131.86

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Solution

The fourth proportional to 6,514.40, 9,771.50 and 2,131.86 is: 3,197.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,514.40 : 9,771.50 = 2,131.86 : x
  2. Step 2: Convert to fraction form
    6,514.40/9,771.50 = 2,131.86/x
  3. Step 3: Cross multiply
    6,514.40x = 9,771.50 × 2,131.86
  4. Step 4: Simplify right side
    6,514.40x = 20,831,469.99
  5. Step 5: Solve for x
    x = 20,831,469.99/6,514.40
  6. Step 6: Final answer
    x = 3,197.76

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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.