Home / 3,247.84-4,481.76-1,921.60

Finding the Fourth Proportional to 3,247.84, 4,481.76 and 1,921.60

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Solution

The fourth proportional to 3,247.84, 4,481.76 and 1,921.60 is: 2,651.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,247.84 : 4,481.76 = 1,921.60 : x
  2. Step 2: Convert to fraction form
    3,247.84/4,481.76 = 1,921.60/x
  3. Step 3: Cross multiply
    3,247.84x = 4,481.76 × 1,921.60
  4. Step 4: Simplify right side
    3,247.84x = 8,612,150.02
  5. Step 5: Solve for x
    x = 8,612,150.02/3,247.84
  6. Step 6: Final answer
    x = 2,651.65

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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.