Home / 8,129.28-11,218.38-4,403.28

Finding the Fourth Proportional to 8,129.28, 11,218.38 and 4,403.28

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Solution

The fourth proportional to 8,129.28, 11,218.38 and 4,403.28 is: 6,076.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129.28 : 11,218.38 = 4,403.28 : x
  2. Step 2: Convert to fraction form
    8,129.28/11,218.38 = 4,403.28/x
  3. Step 3: Cross multiply
    8,129.28x = 11,218.38 × 4,403.28
  4. Step 4: Simplify right side
    8,129.28x = 49,397,668.29
  5. Step 5: Solve for x
    x = 49,397,668.29/8,129.28
  6. Step 6: Final answer
    x = 6,076.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.