Home / 8,187.28-12,285.77-3,255.59

Finding the Fourth Proportional to 8,187.28, 12,285.77 and 3,255.59

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Solution

The fourth proportional to 8,187.28, 12,285.77 and 3,255.59 is: 4,885.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,187.28 : 12,285.77 = 3,255.59 : x
  2. Step 2: Convert to fraction form
    8,187.28/12,285.77 = 3,255.59/x
  3. Step 3: Cross multiply
    8,187.28x = 12,285.77 × 3,255.59
  4. Step 4: Simplify right side
    8,187.28x = 39,997,429.95
  5. Step 5: Solve for x
    x = 39,997,429.95/8,187.28
  6. Step 6: Final answer
    x = 4,885.31

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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.