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Finding the Fourth Proportional to 6,478.17, 8,930.82 and 5,479.44

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Solution

The fourth proportional to 6,478.17, 8,930.82 and 5,479.44 is: 7,553.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,478.17 : 8,930.82 = 5,479.44 : x
  2. Step 2: Convert to fraction form
    6,478.17/8,930.82 = 5,479.44/x
  3. Step 3: Cross multiply
    6,478.17x = 8,930.82 × 5,479.44
  4. Step 4: Simplify right side
    6,478.17x = 48,935,892.34
  5. Step 5: Solve for x
    x = 48,935,892.34/6,478.17
  6. Step 6: Final answer
    x = 7,553.97

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1.5x scale

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.