Home / 8,755.20-13,121.40-3,555

Finding the Fourth Proportional to 8,755.20, 13,121.40 and 3,555

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Solution

The fourth proportional to 8,755.20, 13,121.40 and 3,555 is: 5,327.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,755.20 : 13,121.40 = 3,555 : x
  2. Step 2: Convert to fraction form
    8,755.20/13,121.40 = 3,555/x
  3. Step 3: Cross multiply
    8,755.20x = 13,121.40 × 3,555
  4. Step 4: Simplify right side
    8,755.20x = 46,646,577
  5. Step 5: Solve for x
    x = 46,646,577/8,755.20
  6. Step 6: Final answer
    x = 5,327.87

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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.