Home / 3,638.64-5,456.04-1,328.88

Finding the Fourth Proportional to 3,638.64, 5,456.04 and 1,328.88

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Solution

The fourth proportional to 3,638.64, 5,456.04 and 1,328.88 is: 1,992.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.64 : 5,456.04 = 1,328.88 : x
  2. Step 2: Convert to fraction form
    3,638.64/5,456.04 = 1,328.88/x
  3. Step 3: Cross multiply
    3,638.64x = 5,456.04 × 1,328.88
  4. Step 4: Simplify right side
    3,638.64x = 7,250,422.44
  5. Step 5: Solve for x
    x = 7,250,422.44/3,638.64
  6. Step 6: Final answer
    x = 1,992.62

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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.