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Finding the Fourth Proportional to 2,505.59, 3,757.80 and 945.75

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Solution

The fourth proportional to 2,505.59, 3,757.80 and 945.75 is: 1,418.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,505.59 : 3,757.80 = 945.75 : x
  2. Step 2: Convert to fraction form
    2,505.59/3,757.80 = 945.75/x
  3. Step 3: Cross multiply
    2,505.59x = 3,757.80 × 945.75
  4. Step 4: Simplify right side
    2,505.59x = 3,553,956.99
  5. Step 5: Solve for x
    x = 3,553,956.99/2,505.59
  6. Step 6: Final answer
    x = 1,418.41

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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.