Home / 8,212.88-12,317.40-2,664.80

Finding the Fourth Proportional to 8,212.88, 12,317.40 and 2,664.80

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Solution

The fourth proportional to 8,212.88, 12,317.40 and 2,664.80 is: 3,996.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,212.88 : 12,317.40 = 2,664.80 : x
  2. Step 2: Convert to fraction form
    8,212.88/12,317.40 = 2,664.80/x
  3. Step 3: Cross multiply
    8,212.88x = 12,317.40 × 2,664.80
  4. Step 4: Simplify right side
    8,212.88x = 32,823,407.52
  5. Step 5: Solve for x
    x = 32,823,407.52/8,212.88
  6. Step 6: Final answer
    x = 3,996.58

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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.