Home / 3,115.80-4,298.00-1,996.34

Finding the Fourth Proportional to 3,115.80, 4,298.00 and 1,996.34

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Solution

The fourth proportional to 3,115.80, 4,298.00 and 1,996.34 is: 2,753.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.80 : 4,298.00 = 1,996.34 : x
  2. Step 2: Convert to fraction form
    3,115.80/4,298.00 = 1,996.34/x
  3. Step 3: Cross multiply
    3,115.80x = 4,298.00 × 1,996.34
  4. Step 4: Simplify right side
    3,115.80x = 8,580,237.85
  5. Step 5: Solve for x
    x = 8,580,237.85/3,115.80
  6. Step 6: Final answer
    x = 2,753.78

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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.