Home / 5,128.26-7,698.46-4,316.64

Finding the Fourth Proportional to 5,128.26, 7,698.46 and 4,316.64

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Solution

The fourth proportional to 5,128.26, 7,698.46 and 4,316.64 is: 6,480.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.26 : 7,698.46 = 4,316.64 : x
  2. Step 2: Convert to fraction form
    5,128.26/7,698.46 = 4,316.64/x
  3. Step 3: Cross multiply
    5,128.26x = 7,698.46 × 4,316.64
  4. Step 4: Simplify right side
    5,128.26x = 33,231,480.37
  5. Step 5: Solve for x
    x = 33,231,480.37/5,128.26
  6. Step 6: Final answer
    x = 6,480.07

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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.