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Finding the Fourth Proportional to 7,790.00, 11,684.60 and 2,859.25

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Solution

The fourth proportional to 7,790.00, 11,684.60 and 2,859.25 is: 4,288.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,790.00 : 11,684.60 = 2,859.25 : x
  2. Step 2: Convert to fraction form
    7,790.00/11,684.60 = 2,859.25/x
  3. Step 3: Cross multiply
    7,790.00x = 11,684.60 × 2,859.25
  4. Step 4: Simplify right side
    7,790.00x = 33,409,141.28
  5. Step 5: Solve for x
    x = 33,409,141.28/7,790.00
  6. Step 6: Final answer
    x = 4,288.72

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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.