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Finding the Fourth Proportional to 3,658.39, 5,489.69 and 3,628.67

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Solution

The fourth proportional to 3,658.39, 5,489.69 and 3,628.67 is: 5,445.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,658.39 : 5,489.69 = 3,628.67 : x
  2. Step 2: Convert to fraction form
    3,658.39/5,489.69 = 3,628.67/x
  3. Step 3: Cross multiply
    3,658.39x = 5,489.69 × 3,628.67
  4. Step 4: Simplify right side
    3,658.39x = 19,920,273.41
  5. Step 5: Solve for x
    x = 19,920,273.41/3,658.39
  6. Step 6: Final answer
    x = 5,445.09

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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.