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Finding the Fourth Proportional to 8,405.58, 12,608.36 and 2,562.20

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Solution

The fourth proportional to 8,405.58, 12,608.36 and 2,562.20 is: 3,843.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,405.58 : 12,608.36 = 2,562.20 : x
  2. Step 2: Convert to fraction form
    8,405.58/12,608.36 = 2,562.20/x
  3. Step 3: Cross multiply
    8,405.58x = 12,608.36 × 2,562.20
  4. Step 4: Simplify right side
    8,405.58x = 32,305,064.14
  5. Step 5: Solve for x
    x = 32,305,064.14/8,405.58
  6. Step 6: Final answer
    x = 3,843.29

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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.