Home / 7,988.49-11,983.46-2,145.06

Finding the Fourth Proportional to 7,988.49, 11,983.46 and 2,145.06

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Solution

The fourth proportional to 7,988.49, 11,983.46 and 2,145.06 is: 3,217.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.49 : 11,983.46 = 2,145.06 : x
  2. Step 2: Convert to fraction form
    7,988.49/11,983.46 = 2,145.06/x
  3. Step 3: Cross multiply
    7,988.49x = 11,983.46 × 2,145.06
  4. Step 4: Simplify right side
    7,988.49x = 25,705,229.98
  5. Step 5: Solve for x
    x = 25,705,229.98/7,988.49
  6. Step 6: Final answer
    x = 3,217.78

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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.