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Finding the Fourth Proportional to 5,619.19, 8,429.19 and 2,156.44

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Solution

The fourth proportional to 5,619.19, 8,429.19 and 2,156.44 is: 3,234.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.19 : 8,429.19 = 2,156.44 : x
  2. Step 2: Convert to fraction form
    5,619.19/8,429.19 = 2,156.44/x
  3. Step 3: Cross multiply
    5,619.19x = 8,429.19 × 2,156.44
  4. Step 4: Simplify right side
    5,619.19x = 18,177,013.32
  5. Step 5: Solve for x
    x = 18,177,013.32/5,619.19
  6. Step 6: Final answer
    x = 3,234.81

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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.