Home / 2,808.44-4,211.36-1,638.78

Finding the Fourth Proportional to 2,808.44, 4,211.36 and 1,638.78

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Solution

The fourth proportional to 2,808.44, 4,211.36 and 1,638.78 is: 2,457.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808.44 : 4,211.36 = 1,638.78 : x
  2. Step 2: Convert to fraction form
    2,808.44/4,211.36 = 1,638.78/x
  3. Step 3: Cross multiply
    2,808.44x = 4,211.36 × 1,638.78
  4. Step 4: Simplify right side
    2,808.44x = 6,901,486.54
  5. Step 5: Solve for x
    x = 6,901,486.54/2,808.44
  6. Step 6: Final answer
    x = 2,457.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.