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Finding the Fourth Proportional to 7,995.81, 11,992.05 and 2,151.03

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Solution

The fourth proportional to 7,995.81, 11,992.05 and 2,151.03 is: 3,226.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,995.81 : 11,992.05 = 2,151.03 : x
  2. Step 2: Convert to fraction form
    7,995.81/11,992.05 = 2,151.03/x
  3. Step 3: Cross multiply
    7,995.81x = 11,992.05 × 2,151.03
  4. Step 4: Simplify right side
    7,995.81x = 25,795,259.31
  5. Step 5: Solve for x
    x = 25,795,259.31/7,995.81
  6. Step 6: Final answer
    x = 3,226.10

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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.