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Finding the Fourth Proportional to 2,503.26, 3,755.31 and 771.66

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Solution

The fourth proportional to 2,503.26, 3,755.31 and 771.66 is: 1,157.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,503.26 : 3,755.31 = 771.66 : x
  2. Step 2: Convert to fraction form
    2,503.26/3,755.31 = 771.66/x
  3. Step 3: Cross multiply
    2,503.26x = 3,755.31 × 771.66
  4. Step 4: Simplify right side
    2,503.26x = 2,897,822.51
  5. Step 5: Solve for x
    x = 2,897,822.51/2,503.26
  6. Step 6: Final answer
    x = 1,157.62

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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.