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Finding the Fourth Proportional to 7,995.40, 11,993.12 and 2,800.06

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Solution

The fourth proportional to 7,995.40, 11,993.12 and 2,800.06 is: 4,200.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,995.40 : 11,993.12 = 2,800.06 : x
  2. Step 2: Convert to fraction form
    7,995.40/11,993.12 = 2,800.06/x
  3. Step 3: Cross multiply
    7,995.40x = 11,993.12 × 2,800.06
  4. Step 4: Simplify right side
    7,995.40x = 33,581,381.62
  5. Step 5: Solve for x
    x = 33,581,381.62/7,995.40
  6. Step 6: Final answer
    x = 4,200.09

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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.