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Finding the Fourth Proportional to 6,143.50, 8,478.03 and 3,349

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Solution

The fourth proportional to 6,143.50, 8,478.03 and 3,349 is: 4,621.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,143.50 : 8,478.03 = 3,349 : x
  2. Step 2: Convert to fraction form
    6,143.50/8,478.03 = 3,349/x
  3. Step 3: Cross multiply
    6,143.50x = 8,478.03 × 3,349
  4. Step 4: Simplify right side
    6,143.50x = 28,392,922.47
  5. Step 5: Solve for x
    x = 28,392,922.47/6,143.50
  6. Step 6: Final answer
    x = 4,621.62

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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.