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Finding the Fourth Proportional to 3,429, 4,732 and 1,857.12

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Solution

The fourth proportional to 3,429, 4,732 and 1,857.12 is: 2,562.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,429 : 4,732 = 1,857.12 : x
  2. Step 2: Convert to fraction form
    3,429/4,732 = 1,857.12/x
  3. Step 3: Cross multiply
    3,429x = 4,732 × 1,857.12
  4. Step 4: Simplify right side
    3,429x = 8,787,891.84
  5. Step 5: Solve for x
    x = 8,787,891.84/3,429
  6. Step 6: Final answer
    x = 2,562.81

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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.