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Finding the Fourth Proportional to 3,503.67, 5,255.61 and 906.62

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Solution

The fourth proportional to 3,503.67, 5,255.61 and 906.62 is: 1,359.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,503.67 : 5,255.61 = 906.62 : x
  2. Step 2: Convert to fraction form
    3,503.67/5,255.61 = 906.62/x
  3. Step 3: Cross multiply
    3,503.67x = 5,255.61 × 906.62
  4. Step 4: Simplify right side
    3,503.67x = 4,764,814.86
  5. Step 5: Solve for x
    x = 4,764,814.86/3,503.67
  6. Step 6: Final answer
    x = 1,359.95

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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.