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Finding the Fourth Proportional to 8,755.40, 13,145.90 and 6,169.80

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Solution

The fourth proportional to 8,755.40, 13,145.90 and 6,169.80 is: 9,263.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,755.40 : 13,145.90 = 6,169.80 : x
  2. Step 2: Convert to fraction form
    8,755.40/13,145.90 = 6,169.80/x
  3. Step 3: Cross multiply
    8,755.40x = 13,145.90 × 6,169.80
  4. Step 4: Simplify right side
    8,755.40x = 81,107,573.82
  5. Step 5: Solve for x
    x = 81,107,573.82/8,755.40
  6. Step 6: Final answer
    x = 9,263.72

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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.