Home / 5,521.38-7,619.28-3,161.88

Finding the Fourth Proportional to 5,521.38, 7,619.28 and 3,161.88

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Solution

The fourth proportional to 5,521.38, 7,619.28 and 3,161.88 is: 4,363.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,521.38 : 7,619.28 = 3,161.88 : x
  2. Step 2: Convert to fraction form
    5,521.38/7,619.28 = 3,161.88/x
  3. Step 3: Cross multiply
    5,521.38x = 7,619.28 × 3,161.88
  4. Step 4: Simplify right side
    5,521.38x = 24,091,249.05
  5. Step 5: Solve for x
    x = 24,091,249.05/5,521.38
  6. Step 6: Final answer
    x = 4,363.27

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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.