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Finding the Fourth Proportional to 4,252.70, 6,379.05 and 4,179.80

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Solution

The fourth proportional to 4,252.70, 6,379.05 and 4,179.80 is: 6,269.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,252.70 : 6,379.05 = 4,179.80 : x
  2. Step 2: Convert to fraction form
    4,252.70/6,379.05 = 4,179.80/x
  3. Step 3: Cross multiply
    4,252.70x = 6,379.05 × 4,179.80
  4. Step 4: Simplify right side
    4,252.70x = 26,663,153.19
  5. Step 5: Solve for x
    x = 26,663,153.19/4,252.70
  6. Step 6: Final answer
    x = 6,269.70

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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.