Home / 1,768.98-2,654.37-1,338.78

Finding the Fourth Proportional to 1,768.98, 2,654.37 and 1,338.78

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Solution

The fourth proportional to 1,768.98, 2,654.37 and 1,338.78 is: 2,008.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,768.98 : 2,654.37 = 1,338.78 : x
  2. Step 2: Convert to fraction form
    1,768.98/2,654.37 = 1,338.78/x
  3. Step 3: Cross multiply
    1,768.98x = 2,654.37 × 1,338.78
  4. Step 4: Simplify right side
    1,768.98x = 3,553,617.47
  5. Step 5: Solve for x
    x = 3,553,617.47/1,768.98
  6. Step 6: Final answer
    x = 2,008.85

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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.