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Finding the Fourth Proportional to 2,739.39, 3,780.81 and 1,745.12

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Solution

The fourth proportional to 2,739.39, 3,780.81 and 1,745.12 is: 2,408.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,739.39 : 3,780.81 = 1,745.12 : x
  2. Step 2: Convert to fraction form
    2,739.39/3,780.81 = 1,745.12/x
  3. Step 3: Cross multiply
    2,739.39x = 3,780.81 × 1,745.12
  4. Step 4: Simplify right side
    2,739.39x = 6,597,948.24
  5. Step 5: Solve for x
    x = 6,597,948.24/2,739.39
  6. Step 6: Final answer
    x = 2,408.55

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1.5x scale

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.