Home / 7,186.42-9,917.33-3,999.85

Finding the Fourth Proportional to 7,186.42, 9,917.33 and 3,999.85

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Solution

The fourth proportional to 7,186.42, 9,917.33 and 3,999.85 is: 5,519.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,186.42 : 9,917.33 = 3,999.85 : x
  2. Step 2: Convert to fraction form
    7,186.42/9,917.33 = 3,999.85/x
  3. Step 3: Cross multiply
    7,186.42x = 9,917.33 × 3,999.85
  4. Step 4: Simplify right side
    7,186.42x = 39,667,787.61
  5. Step 5: Solve for x
    x = 39,667,787.61/7,186.42
  6. Step 6: Final answer
    x = 5,519.83

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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.