Home / 5,185.43-7,781.37-2,107.43

Finding the Fourth Proportional to 5,185.43, 7,781.37 and 2,107.43

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Solution

The fourth proportional to 5,185.43, 7,781.37 and 2,107.43 is: 3,162.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.43 : 7,781.37 = 2,107.43 : x
  2. Step 2: Convert to fraction form
    5,185.43/7,781.37 = 2,107.43/x
  3. Step 3: Cross multiply
    5,185.43x = 7,781.37 × 2,107.43
  4. Step 4: Simplify right side
    5,185.43x = 16,398,692.58
  5. Step 5: Solve for x
    x = 16,398,692.58/5,185.43
  6. Step 6: Final answer
    x = 3,162.46

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1.5x scale

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.