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Finding the Fourth Proportional to 3,458.55, 5,189.87 and 3,239.63

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Solution

The fourth proportional to 3,458.55, 5,189.87 and 3,239.63 is: 4,861.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,458.55 : 5,189.87 = 3,239.63 : x
  2. Step 2: Convert to fraction form
    3,458.55/5,189.87 = 3,239.63/x
  3. Step 3: Cross multiply
    3,458.55x = 5,189.87 × 3,239.63
  4. Step 4: Simplify right side
    3,458.55x = 16,813,242.35
  5. Step 5: Solve for x
    x = 16,813,242.35/3,458.55
  6. Step 6: Final answer
    x = 4,861.36

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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.