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Finding the Fourth Proportional to 8,458.43, 12,670.73 and 3,949.41

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Solution

The fourth proportional to 8,458.43, 12,670.73 and 3,949.41 is: 5,916.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,458.43 : 12,670.73 = 3,949.41 : x
  2. Step 2: Convert to fraction form
    8,458.43/12,670.73 = 3,949.41/x
  3. Step 3: Cross multiply
    8,458.43x = 12,670.73 × 3,949.41
  4. Step 4: Simplify right side
    8,458.43x = 50,041,879.07
  5. Step 5: Solve for x
    x = 50,041,879.07/8,458.43
  6. Step 6: Final answer
    x = 5,916.22

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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.