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Finding the Fourth Proportional to 3,976.98, 5,487.81 and 2,208.26

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Solution

The fourth proportional to 3,976.98, 5,487.81 and 2,208.26 is: 3,047.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,976.98 : 5,487.81 = 2,208.26 : x
  2. Step 2: Convert to fraction form
    3,976.98/5,487.81 = 2,208.26/x
  3. Step 3: Cross multiply
    3,976.98x = 5,487.81 × 2,208.26
  4. Step 4: Simplify right side
    3,976.98x = 12,118,483.87
  5. Step 5: Solve for x
    x = 12,118,483.87/3,976.98
  6. Step 6: Final answer
    x = 3,047.16

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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.