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Finding the Fourth Proportional to 8,755.74, 13,120.11 and 4,308.30

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Solution

The fourth proportional to 8,755.74, 13,120.11 and 4,308.30 is: 6,455.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,755.74 : 13,120.11 = 4,308.30 : x
  2. Step 2: Convert to fraction form
    8,755.74/13,120.11 = 4,308.30/x
  3. Step 3: Cross multiply
    8,755.74x = 13,120.11 × 4,308.30
  4. Step 4: Simplify right side
    8,755.74x = 56,525,369.91
  5. Step 5: Solve for x
    x = 56,525,369.91/8,755.74
  6. Step 6: Final answer
    x = 6,455.81

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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.