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Finding the Fourth Proportional to 9,999.12, 14,998.49 and 2,983.89

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Solution

The fourth proportional to 9,999.12, 14,998.49 and 2,983.89 is: 4,475.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,999.12 : 14,998.49 = 2,983.89 : x
  2. Step 2: Convert to fraction form
    9,999.12/14,998.49 = 2,983.89/x
  3. Step 3: Cross multiply
    9,999.12x = 14,998.49 × 2,983.89
  4. Step 4: Simplify right side
    9,999.12x = 44,753,840.60
  5. Step 5: Solve for x
    x = 44,753,840.60/9,999.12
  6. Step 6: Final answer
    x = 4,475.78

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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.