Home / 5,128.44-7,078.26-3,004.20

Finding the Fourth Proportional to 5,128.44, 7,078.26 and 3,004.20

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Solution

The fourth proportional to 5,128.44, 7,078.26 and 3,004.20 is: 4,146.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.44 : 7,078.26 = 3,004.20 : x
  2. Step 2: Convert to fraction form
    5,128.44/7,078.26 = 3,004.20/x
  3. Step 3: Cross multiply
    5,128.44x = 7,078.26 × 3,004.20
  4. Step 4: Simplify right side
    5,128.44x = 21,264,508.69
  5. Step 5: Solve for x
    x = 21,264,508.69/5,128.44
  6. Step 6: Final answer
    x = 4,146.39

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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.