Home / 7,713.82-11,571.64-2,785.78

Finding the Fourth Proportional to 7,713.82, 11,571.64 and 2,785.78

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Solution

The fourth proportional to 7,713.82, 11,571.64 and 2,785.78 is: 4,179.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,713.82 : 11,571.64 = 2,785.78 : x
  2. Step 2: Convert to fraction form
    7,713.82/11,571.64 = 2,785.78/x
  3. Step 3: Cross multiply
    7,713.82x = 11,571.64 × 2,785.78
  4. Step 4: Simplify right side
    7,713.82x = 32,236,043.28
  5. Step 5: Solve for x
    x = 32,236,043.28/7,713.82
  6. Step 6: Final answer
    x = 4,179.00

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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.