Home / 2,170.62-3,251.57-998.99

Finding the Fourth Proportional to 2,170.62, 3,251.57 and 998.99

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Solution

The fourth proportional to 2,170.62, 3,251.57 and 998.99 is: 1,496.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.62 : 3,251.57 = 998.99 : x
  2. Step 2: Convert to fraction form
    2,170.62/3,251.57 = 998.99/x
  3. Step 3: Cross multiply
    2,170.62x = 3,251.57 × 998.99
  4. Step 4: Simplify right side
    2,170.62x = 3,248,276.85
  5. Step 5: Solve for x
    x = 3,248,276.85/2,170.62
  6. Step 6: Final answer
    x = 1,496.47

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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.