Home / 7,749.76-10,694.40-4,212.88

Finding the Fourth Proportional to 7,749.76, 10,694.40 and 4,212.88

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Solution

The fourth proportional to 7,749.76, 10,694.40 and 4,212.88 is: 5,813.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,749.76 : 10,694.40 = 4,212.88 : x
  2. Step 2: Convert to fraction form
    7,749.76/10,694.40 = 4,212.88/x
  3. Step 3: Cross multiply
    7,749.76x = 10,694.40 × 4,212.88
  4. Step 4: Simplify right side
    7,749.76x = 45,054,223.87
  5. Step 5: Solve for x
    x = 45,054,223.87/7,749.76
  6. Step 6: Final answer
    x = 5,813.63

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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.