Home / 3,664.20-5,492.70-1,815.60

Finding the Fourth Proportional to 3,664.20, 5,492.70 and 1,815.60

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Solution

The fourth proportional to 3,664.20, 5,492.70 and 1,815.60 is: 2,721.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,664.20 : 5,492.70 = 1,815.60 : x
  2. Step 2: Convert to fraction form
    3,664.20/5,492.70 = 1,815.60/x
  3. Step 3: Cross multiply
    3,664.20x = 5,492.70 × 1,815.60
  4. Step 4: Simplify right side
    3,664.20x = 9,972,546.12
  5. Step 5: Solve for x
    x = 9,972,546.12/3,664.20
  6. Step 6: Final answer
    x = 2,721.62

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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.