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Finding the Fourth Proportional to 12,670.92, 19,007.46 and 3,906.72

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Solution

The fourth proportional to 12,670.92, 19,007.46 and 3,906.72 is: 5,860.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,670.92 : 19,007.46 = 3,906.72 : x
  2. Step 2: Convert to fraction form
    12,670.92/19,007.46 = 3,906.72/x
  3. Step 3: Cross multiply
    12,670.92x = 19,007.46 × 3,906.72
  4. Step 4: Simplify right side
    12,670.92x = 74,256,824.13
  5. Step 5: Solve for x
    x = 74,256,824.13/12,670.92
  6. Step 6: Final answer
    x = 5,860.41

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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.