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Finding the Fourth Proportional to 3,428.96, 4,731.96 and 1,857.05

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Solution

The fourth proportional to 3,428.96, 4,731.96 and 1,857.05 is: 2,562.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.96 : 4,731.96 = 1,857.05 : x
  2. Step 2: Convert to fraction form
    3,428.96/4,731.96 = 1,857.05/x
  3. Step 3: Cross multiply
    3,428.96x = 4,731.96 × 1,857.05
  4. Step 4: Simplify right side
    3,428.96x = 8,787,477.03
  5. Step 5: Solve for x
    x = 8,787,477.03/3,428.96
  6. Step 6: Final answer
    x = 2,562.72

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Why These Related Problems?

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