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Finding the Fourth Proportional to 3,818.70, 5,269.70 and 2,246.90

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Solution

The fourth proportional to 3,818.70, 5,269.70 and 2,246.90 is: 3,100.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,818.70 : 5,269.70 = 2,246.90 : x
  2. Step 2: Convert to fraction form
    3,818.70/5,269.70 = 2,246.90/x
  3. Step 3: Cross multiply
    3,818.70x = 5,269.70 × 2,246.90
  4. Step 4: Simplify right side
    3,818.70x = 11,840,488.93
  5. Step 5: Solve for x
    x = 11,840,488.93/3,818.70
  6. Step 6: Final answer
    x = 3,100.66

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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.