Home / 8,619.75-11,873.52-7,202.79

Finding the Fourth Proportional to 8,619.75, 11,873.52 and 7,202.79

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Solution

The fourth proportional to 8,619.75, 11,873.52 and 7,202.79 is: 9,921.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.75 : 11,873.52 = 7,202.79 : x
  2. Step 2: Convert to fraction form
    8,619.75/11,873.52 = 7,202.79/x
  3. Step 3: Cross multiply
    8,619.75x = 11,873.52 × 7,202.79
  4. Step 4: Simplify right side
    8,619.75x = 85,522,471.12
  5. Step 5: Solve for x
    x = 85,522,471.12/8,619.75
  6. Step 6: Final answer
    x = 9,921.69

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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.