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Finding the Fourth Proportional to 8,575.56, 12,863.40 and 8,203.80

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Solution

The fourth proportional to 8,575.56, 12,863.40 and 8,203.80 is: 12,305.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,575.56 : 12,863.40 = 8,203.80 : x
  2. Step 2: Convert to fraction form
    8,575.56/12,863.40 = 8,203.80/x
  3. Step 3: Cross multiply
    8,575.56x = 12,863.40 × 8,203.80
  4. Step 4: Simplify right side
    8,575.56x = 105,528,760.92
  5. Step 5: Solve for x
    x = 105,528,760.92/8,575.56
  6. Step 6: Final answer
    x = 12,305.76

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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.