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Finding the Fourth Proportional to 7,995.80, 11,991.75 and 3,551.02

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Solution

The fourth proportional to 7,995.80, 11,991.75 and 3,551.02 is: 5,325.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,995.80 : 11,991.75 = 3,551.02 : x
  2. Step 2: Convert to fraction form
    7,995.80/11,991.75 = 3,551.02/x
  3. Step 3: Cross multiply
    7,995.80x = 11,991.75 × 3,551.02
  4. Step 4: Simplify right side
    7,995.80x = 42,582,900.79
  5. Step 5: Solve for x
    x = 42,582,900.79/7,995.80
  6. Step 6: Final answer
    x = 5,325.66

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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.