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Finding the Fourth Proportional to 12,608.79, 18,910.75 and 3,844.59

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Solution

The fourth proportional to 12,608.79, 18,910.75 and 3,844.59 is: 5,766.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,608.79 : 18,910.75 = 3,844.59 : x
  2. Step 2: Convert to fraction form
    12,608.79/18,910.75 = 3,844.59/x
  3. Step 3: Cross multiply
    12,608.79x = 18,910.75 × 3,844.59
  4. Step 4: Simplify right side
    12,608.79x = 72,704,080.34
  5. Step 5: Solve for x
    x = 72,704,080.34/12,608.79
  6. Step 6: Final answer
    x = 5,766.14

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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.