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Finding the Fourth Proportional to 9,999.75, 15,000.37 and 3,843.75

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Solution

The fourth proportional to 9,999.75, 15,000.37 and 3,843.75 is: 5,765.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,999.75 : 15,000.37 = 3,843.75 : x
  2. Step 2: Convert to fraction form
    9,999.75/15,000.37 = 3,843.75/x
  3. Step 3: Cross multiply
    9,999.75x = 15,000.37 × 3,843.75
  4. Step 4: Simplify right side
    9,999.75x = 57,657,652.97
  5. Step 5: Solve for x
    x = 57,657,652.97/9,999.75
  6. Step 6: Final answer
    x = 5,765.91

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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.