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Finding the Fourth Proportional to 1,893.62, 2,839.76 and 723.95

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Solution

The fourth proportional to 1,893.62, 2,839.76 and 723.95 is: 1,085.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,893.62 : 2,839.76 = 723.95 : x
  2. Step 2: Convert to fraction form
    1,893.62/2,839.76 = 723.95/x
  3. Step 3: Cross multiply
    1,893.62x = 2,839.76 × 723.95
  4. Step 4: Simplify right side
    1,893.62x = 2,055,826.43
  5. Step 5: Solve for x
    x = 2,055,826.43/1,893.62
  6. Step 6: Final answer
    x = 1,085.66

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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.