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Finding the Fourth Proportional to 5,620.91, 8,429.40 and 1,922.22

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Solution

The fourth proportional to 5,620.91, 8,429.40 and 1,922.22 is: 2,882.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,620.91 : 8,429.40 = 1,922.22 : x
  2. Step 2: Convert to fraction form
    5,620.91/8,429.40 = 1,922.22/x
  3. Step 3: Cross multiply
    5,620.91x = 8,429.40 × 1,922.22
  4. Step 4: Simplify right side
    5,620.91x = 16,203,161.27
  5. Step 5: Solve for x
    x = 16,203,161.27/5,620.91
  6. Step 6: Final answer
    x = 2,882.66

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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.