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Finding the Fourth Proportional to 7,999.81, 12,001.61 and 3,617.26

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Solution

The fourth proportional to 7,999.81, 12,001.61 and 3,617.26 is: 5,426.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.81 : 12,001.61 = 3,617.26 : x
  2. Step 2: Convert to fraction form
    7,999.81/12,001.61 = 3,617.26/x
  3. Step 3: Cross multiply
    7,999.81x = 12,001.61 × 3,617.26
  4. Step 4: Simplify right side
    7,999.81x = 43,412,895.70
  5. Step 5: Solve for x
    x = 43,412,895.70/7,999.81
  6. Step 6: Final answer
    x = 5,426.74

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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.