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Finding the Fourth Proportional to 8,645.44, 12,968.17 and 2,405.46

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Solution

The fourth proportional to 8,645.44, 12,968.17 and 2,405.46 is: 3,608.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,645.44 : 12,968.17 = 2,405.46 : x
  2. Step 2: Convert to fraction form
    8,645.44/12,968.17 = 2,405.46/x
  3. Step 3: Cross multiply
    8,645.44x = 12,968.17 × 2,405.46
  4. Step 4: Simplify right side
    8,645.44x = 31,194,349.37
  5. Step 5: Solve for x
    x = 31,194,349.37/8,645.44
  6. Step 6: Final answer
    x = 3,608.19

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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.