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Finding the Fourth Proportional to 3,976.91, 5,488.47 and 2,208.63

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Solution

The fourth proportional to 3,976.91, 5,488.47 and 2,208.63 is: 3,048.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,976.91 : 5,488.47 = 2,208.63 : x
  2. Step 2: Convert to fraction form
    3,976.91/5,488.47 = 2,208.63/x
  3. Step 3: Cross multiply
    3,976.91x = 5,488.47 × 2,208.63
  4. Step 4: Simplify right side
    3,976.91x = 12,121,999.50
  5. Step 5: Solve for x
    x = 12,121,999.50/3,976.91
  6. Step 6: Final answer
    x = 3,048.09

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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.