Home / 3,945.60-5,910.30-1,998.90

Finding the Fourth Proportional to 3,945.60, 5,910.30 and 1,998.90

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Solution

The fourth proportional to 3,945.60, 5,910.30 and 1,998.90 is: 2,994.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.60 : 5,910.30 = 1,998.90 : x
  2. Step 2: Convert to fraction form
    3,945.60/5,910.30 = 1,998.90/x
  3. Step 3: Cross multiply
    3,945.60x = 5,910.30 × 1,998.90
  4. Step 4: Simplify right side
    3,945.60x = 11,814,098.67
  5. Step 5: Solve for x
    x = 11,814,098.67/3,945.60
  6. Step 6: Final answer
    x = 2,994.25

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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.