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Finding the Fourth Proportional to 3,965.68, 5,949.12 and 1,368.28

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Solution

The fourth proportional to 3,965.68, 5,949.12 and 1,368.28 is: 2,052.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,965.68 : 5,949.12 = 1,368.28 : x
  2. Step 2: Convert to fraction form
    3,965.68/5,949.12 = 1,368.28/x
  3. Step 3: Cross multiply
    3,965.68x = 5,949.12 × 1,368.28
  4. Step 4: Simplify right side
    3,965.68x = 8,140,061.91
  5. Step 5: Solve for x
    x = 8,140,061.91/3,965.68
  6. Step 6: Final answer
    x = 2,052.63

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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.