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Finding the Fourth Proportional to 1,830.78, 2,747.26 and 1,681.89

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Solution

The fourth proportional to 1,830.78, 2,747.26 and 1,681.89 is: 2,523.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,830.78 : 2,747.26 = 1,681.89 : x
  2. Step 2: Convert to fraction form
    1,830.78/2,747.26 = 1,681.89/x
  3. Step 3: Cross multiply
    1,830.78x = 2,747.26 × 1,681.89
  4. Step 4: Simplify right side
    1,830.78x = 4,620,584.92
  5. Step 5: Solve for x
    x = 4,620,584.92/1,830.78
  6. Step 6: Final answer
    x = 2,523.84

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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.