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Finding the Fourth Proportional to 8,010.52, 12,015.78 and 2,815.20

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Solution

The fourth proportional to 8,010.52, 12,015.78 and 2,815.20 is: 4,222.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,010.52 : 12,015.78 = 2,815.20 : x
  2. Step 2: Convert to fraction form
    8,010.52/12,015.78 = 2,815.20/x
  3. Step 3: Cross multiply
    8,010.52x = 12,015.78 × 2,815.20
  4. Step 4: Simplify right side
    8,010.52x = 33,826,823.86
  5. Step 5: Solve for x
    x = 33,826,823.86/8,010.52
  6. Step 6: Final answer
    x = 4,222.80

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Similar ratio
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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.