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Finding the Fourth Proportional to 8,555.32, 12,803.77 and 7,170.22

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Solution

The fourth proportional to 8,555.32, 12,803.77 and 7,170.22 is: 10,730.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,555.32 : 12,803.77 = 7,170.22 : x
  2. Step 2: Convert to fraction form
    8,555.32/12,803.77 = 7,170.22/x
  3. Step 3: Cross multiply
    8,555.32x = 12,803.77 × 7,170.22
  4. Step 4: Simplify right side
    8,555.32x = 91,805,847.73
  5. Step 5: Solve for x
    x = 91,805,847.73/8,555.32
  6. Step 6: Final answer
    x = 10,730.85

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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.