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Finding the Fourth Proportional to 2,425.97, 3,638.96 and 782.69

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Solution

The fourth proportional to 2,425.97, 3,638.96 and 782.69 is: 1,174.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,425.97 : 3,638.96 = 782.69 : x
  2. Step 2: Convert to fraction form
    2,425.97/3,638.96 = 782.69/x
  3. Step 3: Cross multiply
    2,425.97x = 3,638.96 × 782.69
  4. Step 4: Simplify right side
    2,425.97x = 2,848,161.36
  5. Step 5: Solve for x
    x = 2,848,161.36/2,425.97
  6. Step 6: Final answer
    x = 1,174.03

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1.5x scale

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.