Home / 7,755.21-11,631.72-2,490.68

Finding the Fourth Proportional to 7,755.21, 11,631.72 and 2,490.68

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Solution

The fourth proportional to 7,755.21, 11,631.72 and 2,490.68 is: 3,735.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,755.21 : 11,631.72 = 2,490.68 : x
  2. Step 2: Convert to fraction form
    7,755.21/11,631.72 = 2,490.68/x
  3. Step 3: Cross multiply
    7,755.21x = 11,631.72 × 2,490.68
  4. Step 4: Simplify right side
    7,755.21x = 28,970,824.87
  5. Step 5: Solve for x
    x = 28,970,824.87/7,755.21
  6. Step 6: Final answer
    x = 3,735.66

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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.