Home / 6,514.16-9,765.09-2,128.55

Finding the Fourth Proportional to 6,514.16, 9,765.09 and 2,128.55

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Solution

The fourth proportional to 6,514.16, 9,765.09 and 2,128.55 is: 3,190.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,514.16 : 9,765.09 = 2,128.55 : x
  2. Step 2: Convert to fraction form
    6,514.16/9,765.09 = 2,128.55/x
  3. Step 3: Cross multiply
    6,514.16x = 9,765.09 × 2,128.55
  4. Step 4: Simplify right side
    6,514.16x = 20,785,433.49
  5. Step 5: Solve for x
    x = 20,785,433.49/6,514.16
  6. Step 6: Final answer
    x = 3,190.81

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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.