Home / 7,749.76-10,694.64-4,213.12

Finding the Fourth Proportional to 7,749.76, 10,694.64 and 4,213.12

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Solution

The fourth proportional to 7,749.76, 10,694.64 and 4,213.12 is: 5,814.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,749.76 : 10,694.64 = 4,213.12 : x
  2. Step 2: Convert to fraction form
    7,749.76/10,694.64 = 4,213.12/x
  3. Step 3: Cross multiply
    7,749.76x = 10,694.64 × 4,213.12
  4. Step 4: Simplify right side
    7,749.76x = 45,057,801.68
  5. Step 5: Solve for x
    x = 45,057,801.68/7,749.76
  6. Step 6: Final answer
    x = 5,814.09

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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.