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Finding the Fourth Proportional to 2,568.17, 3,544.04 and 1,389.21

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Solution

The fourth proportional to 2,568.17, 3,544.04 and 1,389.21 is: 1,917.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,568.17 : 3,544.04 = 1,389.21 : x
  2. Step 2: Convert to fraction form
    2,568.17/3,544.04 = 1,389.21/x
  3. Step 3: Cross multiply
    2,568.17x = 3,544.04 × 1,389.21
  4. Step 4: Simplify right side
    2,568.17x = 4,923,419.28
  5. Step 5: Solve for x
    x = 4,923,419.28/2,568.17
  6. Step 6: Final answer
    x = 1,917.10

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.