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Finding the Fourth Proportional to 6,471.45, 8,929.49 and 3,819.71

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Solution

The fourth proportional to 6,471.45, 8,929.49 and 3,819.71 is: 5,270.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,471.45 : 8,929.49 = 3,819.71 : x
  2. Step 2: Convert to fraction form
    6,471.45/8,929.49 = 3,819.71/x
  3. Step 3: Cross multiply
    6,471.45x = 8,929.49 × 3,819.71
  4. Step 4: Simplify right side
    6,471.45x = 34,107,998.50
  5. Step 5: Solve for x
    x = 34,107,998.50/6,471.45
  6. Step 6: Final answer
    x = 5,270.53

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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.