Home / 3,898.54-5,379.44-2,196.80

Finding the Fourth Proportional to 3,898.54, 5,379.44 and 2,196.80

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Solution

The fourth proportional to 3,898.54, 5,379.44 and 2,196.80 is: 3,031.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.54 : 5,379.44 = 2,196.80 : x
  2. Step 2: Convert to fraction form
    3,898.54/5,379.44 = 2,196.80/x
  3. Step 3: Cross multiply
    3,898.54x = 5,379.44 × 2,196.80
  4. Step 4: Simplify right side
    3,898.54x = 11,817,553.79
  5. Step 5: Solve for x
    x = 11,817,553.79/3,898.54
  6. Step 6: Final answer
    x = 3,031.28

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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.