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Finding the Fourth Proportional to 7,105.92, 10,658.88 and 3,640.96

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Solution

The fourth proportional to 7,105.92, 10,658.88 and 3,640.96 is: 5,461.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,105.92 : 10,658.88 = 3,640.96 : x
  2. Step 2: Convert to fraction form
    7,105.92/10,658.88 = 3,640.96/x
  3. Step 3: Cross multiply
    7,105.92x = 10,658.88 × 3,640.96
  4. Step 4: Simplify right side
    7,105.92x = 38,808,555.72
  5. Step 5: Solve for x
    x = 38,808,555.72/7,105.92
  6. Step 6: Final answer
    x = 5,461.44

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Similar ratio
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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.