Home / 7,749.28-11,620.26-2,815.48

Finding the Fourth Proportional to 7,749.28, 11,620.26 and 2,815.48

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Solution

The fourth proportional to 7,749.28, 11,620.26 and 2,815.48 is: 4,221.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,749.28 : 11,620.26 = 2,815.48 : x
  2. Step 2: Convert to fraction form
    7,749.28/11,620.26 = 2,815.48/x
  3. Step 3: Cross multiply
    7,749.28x = 11,620.26 × 2,815.48
  4. Step 4: Simplify right side
    7,749.28x = 32,716,609.62
  5. Step 5: Solve for x
    x = 32,716,609.62/7,749.28
  6. Step 6: Final answer
    x = 4,221.89

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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.