Home / 8,456.18-12,685.87-2,611.43

Finding the Fourth Proportional to 8,456.18, 12,685.87 and 2,611.43

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Solution

The fourth proportional to 8,456.18, 12,685.87 and 2,611.43 is: 3,917.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,456.18 : 12,685.87 = 2,611.43 : x
  2. Step 2: Convert to fraction form
    8,456.18/12,685.87 = 2,611.43/x
  3. Step 3: Cross multiply
    8,456.18x = 12,685.87 × 2,611.43
  4. Step 4: Simplify right side
    8,456.18x = 33,128,261.49
  5. Step 5: Solve for x
    x = 33,128,261.49/8,456.18
  6. Step 6: Final answer
    x = 3,917.64

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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.