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Finding the Fourth Proportional to 3,357.76, 5,028.72 and 1,968.16

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Solution

The fourth proportional to 3,357.76, 5,028.72 and 1,968.16 is: 2,947.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,357.76 : 5,028.72 = 1,968.16 : x
  2. Step 2: Convert to fraction form
    3,357.76/5,028.72 = 1,968.16/x
  3. Step 3: Cross multiply
    3,357.76x = 5,028.72 × 1,968.16
  4. Step 4: Simplify right side
    3,357.76x = 9,897,325.56
  5. Step 5: Solve for x
    x = 9,897,325.56/3,357.76
  6. Step 6: Final answer
    x = 2,947.60

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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.