Home / 5,250.21-7,245.03-2,891.91

Finding the Fourth Proportional to 5,250.21, 7,245.03 and 2,891.91

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Solution

The fourth proportional to 5,250.21, 7,245.03 and 2,891.91 is: 3,990.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,250.21 : 7,245.03 = 2,891.91 : x
  2. Step 2: Convert to fraction form
    5,250.21/7,245.03 = 2,891.91/x
  3. Step 3: Cross multiply
    5,250.21x = 7,245.03 × 2,891.91
  4. Step 4: Simplify right side
    5,250.21x = 20,951,974.71
  5. Step 5: Solve for x
    x = 20,951,974.71/5,250.21
  6. Step 6: Final answer
    x = 3,990.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.