Home / 7,850.34-11,775.57-2,659.86

Finding the Fourth Proportional to 7,850.34, 11,775.57 and 2,659.86

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Solution

The fourth proportional to 7,850.34, 11,775.57 and 2,659.86 is: 3,989.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,850.34 : 11,775.57 = 2,659.86 : x
  2. Step 2: Convert to fraction form
    7,850.34/11,775.57 = 2,659.86/x
  3. Step 3: Cross multiply
    7,850.34x = 11,775.57 × 2,659.86
  4. Step 4: Simplify right side
    7,850.34x = 31,321,367.62
  5. Step 5: Solve for x
    x = 31,321,367.62/7,850.34
  6. Step 6: Final answer
    x = 3,989.81

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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.