Home / 6,983.20-9,636.75-3,999.56

Finding the Fourth Proportional to 6,983.20, 9,636.75 and 3,999.56

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Solution

The fourth proportional to 6,983.20, 9,636.75 and 3,999.56 is: 5,519.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,983.20 : 9,636.75 = 3,999.56 : x
  2. Step 2: Convert to fraction form
    6,983.20/9,636.75 = 3,999.56/x
  3. Step 3: Cross multiply
    6,983.20x = 9,636.75 × 3,999.56
  4. Step 4: Simplify right side
    6,983.20x = 38,542,759.83
  5. Step 5: Solve for x
    x = 38,542,759.83/6,983.20
  6. Step 6: Final answer
    x = 5,519.35

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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.