Home / 3,976.52-5,487.78-2,208.20

Finding the Fourth Proportional to 3,976.52, 5,487.78 and 2,208.20

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Solution

The fourth proportional to 3,976.52, 5,487.78 and 2,208.20 is: 3,047.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,976.52 : 5,487.78 = 2,208.20 : x
  2. Step 2: Convert to fraction form
    3,976.52/5,487.78 = 2,208.20/x
  3. Step 3: Cross multiply
    3,976.52x = 5,487.78 × 2,208.20
  4. Step 4: Simplify right side
    3,976.52x = 12,118,115.80
  5. Step 5: Solve for x
    x = 12,118,115.80/3,976.52
  6. Step 6: Final answer
    x = 3,047.42

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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.