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Finding the Fourth Proportional to 7,999.77, 12,001.17 and 3,617.22

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Solution

The fourth proportional to 7,999.77, 12,001.17 and 3,617.22 is: 5,426.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.77 : 12,001.17 = 3,617.22 : x
  2. Step 2: Convert to fraction form
    7,999.77/12,001.17 = 3,617.22/x
  3. Step 3: Cross multiply
    7,999.77x = 12,001.17 × 3,617.22
  4. Step 4: Simplify right side
    7,999.77x = 43,410,872.15
  5. Step 5: Solve for x
    x = 43,410,872.15/7,999.77
  6. Step 6: Final answer
    x = 5,426.52

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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.