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Finding the Fourth Proportional to 3,678.73, 5,519 and 1,830.72

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Solution

The fourth proportional to 3,678.73, 5,519 and 1,830.72 is: 2,746.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.73 : 5,519 = 1,830.72 : x
  2. Step 2: Convert to fraction form
    3,678.73/5,519 = 1,830.72/x
  3. Step 3: Cross multiply
    3,678.73x = 5,519 × 1,830.72
  4. Step 4: Simplify right side
    3,678.73x = 10,103,743.68
  5. Step 5: Solve for x
    x = 10,103,743.68/3,678.73
  6. Step 6: Final answer
    x = 2,746.53

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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.