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Finding the Fourth Proportional to 3,821.64, 5,735.12 and 1,356.44

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Solution

The fourth proportional to 3,821.64, 5,735.12 and 1,356.44 is: 2,035.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.64 : 5,735.12 = 1,356.44 : x
  2. Step 2: Convert to fraction form
    3,821.64/5,735.12 = 1,356.44/x
  3. Step 3: Cross multiply
    3,821.64x = 5,735.12 × 1,356.44
  4. Step 4: Simplify right side
    3,821.64x = 7,779,346.17
  5. Step 5: Solve for x
    x = 7,779,346.17/3,821.64
  6. Step 6: Final answer
    x = 2,035.60

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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.