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Finding the Fourth Proportional to 2,505, 3,759.90 and 1,043.76

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Solution

The fourth proportional to 2,505, 3,759.90 and 1,043.76 is: 1,566.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,505 : 3,759.90 = 1,043.76 : x
  2. Step 2: Convert to fraction form
    2,505/3,759.90 = 1,043.76/x
  3. Step 3: Cross multiply
    2,505x = 3,759.90 × 1,043.76
  4. Step 4: Simplify right side
    2,505x = 3,924,433.22
  5. Step 5: Solve for x
    x = 3,924,433.22/2,505
  6. Step 6: Final answer
    x = 1,566.64

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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.