Home / 8,455.31-12,685.05-2,611.92

Finding the Fourth Proportional to 8,455.31, 12,685.05 and 2,611.92

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Solution

The fourth proportional to 8,455.31, 12,685.05 and 2,611.92 is: 3,918.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455.31 : 12,685.05 = 2,611.92 : x
  2. Step 2: Convert to fraction form
    8,455.31/12,685.05 = 2,611.92/x
  3. Step 3: Cross multiply
    8,455.31x = 12,685.05 × 2,611.92
  4. Step 4: Simplify right side
    8,455.31x = 33,132,272.37
  5. Step 5: Solve for x
    x = 33,132,272.37/8,455.31
  6. Step 6: Final answer
    x = 3,918.52

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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.