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Finding the Fourth Proportional to 7,768.32, 10,720.32 and 4,625.92

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Solution

The fourth proportional to 7,768.32, 10,720.32 and 4,625.92 is: 6,383.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,768.32 : 10,720.32 = 4,625.92 : x
  2. Step 2: Convert to fraction form
    7,768.32/10,720.32 = 4,625.92/x
  3. Step 3: Cross multiply
    7,768.32x = 10,720.32 × 4,625.92
  4. Step 4: Simplify right side
    7,768.32x = 49,591,342.69
  5. Step 5: Solve for x
    x = 49,591,342.69/7,768.32
  6. Step 6: Final answer
    x = 6,383.79

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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.