Home / 3,509.72-4,843.28-2,112.20

Finding the Fourth Proportional to 3,509.72, 4,843.28 and 2,112.20

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Solution

The fourth proportional to 3,509.72, 4,843.28 and 2,112.20 is: 2,914.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,509.72 : 4,843.28 = 2,112.20 : x
  2. Step 2: Convert to fraction form
    3,509.72/4,843.28 = 2,112.20/x
  3. Step 3: Cross multiply
    3,509.72x = 4,843.28 × 2,112.20
  4. Step 4: Simplify right side
    3,509.72x = 10,229,976.02
  5. Step 5: Solve for x
    x = 10,229,976.02/3,509.72
  6. Step 6: Final answer
    x = 2,914.76

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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.