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Finding the Fourth Proportional to 7,910.88, 11,866.24 and 3,292.80

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Solution

The fourth proportional to 7,910.88, 11,866.24 and 3,292.80 is: 4,939.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,910.88 : 11,866.24 = 3,292.80 : x
  2. Step 2: Convert to fraction form
    7,910.88/11,866.24 = 3,292.80/x
  3. Step 3: Cross multiply
    7,910.88x = 11,866.24 × 3,292.80
  4. Step 4: Simplify right side
    7,910.88x = 39,073,155.07
  5. Step 5: Solve for x
    x = 39,073,155.07/7,910.88
  6. Step 6: Final answer
    x = 4,939.17

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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.