Home / 4,086.28-5,632.20-3,128.86

Finding the Fourth Proportional to 4,086.28, 5,632.20 and 3,128.86

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Solution

The fourth proportional to 4,086.28, 5,632.20 and 3,128.86 is: 4,312.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,086.28 : 5,632.20 = 3,128.86 : x
  2. Step 2: Convert to fraction form
    4,086.28/5,632.20 = 3,128.86/x
  3. Step 3: Cross multiply
    4,086.28x = 5,632.20 × 3,128.86
  4. Step 4: Simplify right side
    4,086.28x = 17,622,365.29
  5. Step 5: Solve for x
    x = 17,622,365.29/4,086.28
  6. Step 6: Final answer
    x = 4,312.57

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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.