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Finding the Fourth Proportional to 1,755.98, 2,634.39 and 782.30

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Solution

The fourth proportional to 1,755.98, 2,634.39 and 782.30 is: 1,173.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,755.98 : 2,634.39 = 782.30 : x
  2. Step 2: Convert to fraction form
    1,755.98/2,634.39 = 782.30/x
  3. Step 3: Cross multiply
    1,755.98x = 2,634.39 × 782.30
  4. Step 4: Simplify right side
    1,755.98x = 2,060,883.30
  5. Step 5: Solve for x
    x = 2,060,883.30/1,755.98
  6. Step 6: Final answer
    x = 1,173.64

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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.