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Finding the Fourth Proportional to 1,821.63, 2,732.44 and 725.98

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Solution

The fourth proportional to 1,821.63, 2,732.44 and 725.98 is: 1,088.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.63 : 2,732.44 = 725.98 : x
  2. Step 2: Convert to fraction form
    1,821.63/2,732.44 = 725.98/x
  3. Step 3: Cross multiply
    1,821.63x = 2,732.44 × 725.98
  4. Step 4: Simplify right side
    1,821.63x = 1,983,696.79
  5. Step 5: Solve for x
    x = 1,983,696.79/1,821.63
  6. Step 6: Final answer
    x = 1,088.97

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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.