Home / 2,181.76-3,267.44-1,399.28

Finding the Fourth Proportional to 2,181.76, 3,267.44 and 1,399.28

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Solution

The fourth proportional to 2,181.76, 3,267.44 and 1,399.28 is: 2,095.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.76 : 3,267.44 = 1,399.28 : x
  2. Step 2: Convert to fraction form
    2,181.76/3,267.44 = 1,399.28/x
  3. Step 3: Cross multiply
    2,181.76x = 3,267.44 × 1,399.28
  4. Step 4: Simplify right side
    2,181.76x = 4,572,063.44
  5. Step 5: Solve for x
    x = 4,572,063.44/2,181.76
  6. Step 6: Final answer
    x = 2,095.58

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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.