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Finding the Fourth Proportional to 11,910.80, 17,862.08 and 4,888.82

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Solution

The fourth proportional to 11,910.80, 17,862.08 and 4,888.82 is: 7,331.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,910.80 : 17,862.08 = 4,888.82 : x
  2. Step 2: Convert to fraction form
    11,910.80/17,862.08 = 4,888.82/x
  3. Step 3: Cross multiply
    11,910.80x = 17,862.08 × 4,888.82
  4. Step 4: Simplify right side
    11,910.80x = 87,324,380.19
  5. Step 5: Solve for x
    x = 87,324,380.19/11,910.80
  6. Step 6: Final answer
    x = 7,331.53

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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.