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Finding the Fourth Proportional to 7,999.96, 12,001.64 and 3,069.56

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Solution

The fourth proportional to 7,999.96, 12,001.64 and 3,069.56 is: 4,604.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.96 : 12,001.64 = 3,069.56 : x
  2. Step 2: Convert to fraction form
    7,999.96/12,001.64 = 3,069.56/x
  3. Step 3: Cross multiply
    7,999.96x = 12,001.64 × 3,069.56
  4. Step 4: Simplify right side
    7,999.96x = 36,839,701.74
  5. Step 5: Solve for x
    x = 36,839,701.74/7,999.96
  6. Step 6: Final answer
    x = 4,604.99

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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.