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Finding the Fourth Proportional to 7,995.91, 11,995.50 and 2,805.43

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Solution

The fourth proportional to 7,995.91, 11,995.50 and 2,805.43 is: 4,208.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,995.91 : 11,995.50 = 2,805.43 : x
  2. Step 2: Convert to fraction form
    7,995.91/11,995.50 = 2,805.43/x
  3. Step 3: Cross multiply
    7,995.91x = 11,995.50 × 2,805.43
  4. Step 4: Simplify right side
    7,995.91x = 33,652,535.57
  5. Step 5: Solve for x
    x = 33,652,535.57/7,995.91
  6. Step 6: Final answer
    x = 4,208.72

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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.