Home / 3,976.60-5,487.78-2,208.28

Finding the Fourth Proportional to 3,976.60, 5,487.78 and 2,208.28

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Solution

The fourth proportional to 3,976.60, 5,487.78 and 2,208.28 is: 3,047.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,976.60 : 5,487.78 = 2,208.28 : x
  2. Step 2: Convert to fraction form
    3,976.60/5,487.78 = 2,208.28/x
  3. Step 3: Cross multiply
    3,976.60x = 5,487.78 × 2,208.28
  4. Step 4: Simplify right side
    3,976.60x = 12,118,554.82
  5. Step 5: Solve for x
    x = 12,118,554.82/3,976.60
  6. Step 6: Final answer
    x = 3,047.47

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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.