Home / 8,321.26-11,481.60-4,871.20

Finding the Fourth Proportional to 8,321.26, 11,481.60 and 4,871.20

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Solution

The fourth proportional to 8,321.26, 11,481.60 and 4,871.20 is: 6,721.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,321.26 : 11,481.60 = 4,871.20 : x
  2. Step 2: Convert to fraction form
    8,321.26/11,481.60 = 4,871.20/x
  3. Step 3: Cross multiply
    8,321.26x = 11,481.60 × 4,871.20
  4. Step 4: Simplify right side
    8,321.26x = 55,929,169.92
  5. Step 5: Solve for x
    x = 55,929,169.92/8,321.26
  6. Step 6: Final answer
    x = 6,721.24

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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.