Home / 2,736.60-3,777.48-1,689

Finding the Fourth Proportional to 2,736.60, 3,777.48 and 1,689

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Solution

The fourth proportional to 2,736.60, 3,777.48 and 1,689 is: 2,331.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,736.60 : 3,777.48 = 1,689 : x
  2. Step 2: Convert to fraction form
    2,736.60/3,777.48 = 1,689/x
  3. Step 3: Cross multiply
    2,736.60x = 3,777.48 × 1,689
  4. Step 4: Simplify right side
    2,736.60x = 6,380,163.72
  5. Step 5: Solve for x
    x = 6,380,163.72/2,736.60
  6. Step 6: Final answer
    x = 2,331.42

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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.