Home / 4,481.28-6,721.92-1,405.44

Finding the Fourth Proportional to 4,481.28, 6,721.92 and 1,405.44

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Solution

The fourth proportional to 4,481.28, 6,721.92 and 1,405.44 is: 2,108.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,481.28 : 6,721.92 = 1,405.44 : x
  2. Step 2: Convert to fraction form
    4,481.28/6,721.92 = 1,405.44/x
  3. Step 3: Cross multiply
    4,481.28x = 6,721.92 × 1,405.44
  4. Step 4: Simplify right side
    4,481.28x = 9,447,255.24
  5. Step 5: Solve for x
    x = 9,447,255.24/4,481.28
  6. Step 6: Final answer
    x = 2,108.16

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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.