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Finding the Fourth Proportional to 1,819.16, 2,726.94 and 722.84

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Solution

The fourth proportional to 1,819.16, 2,726.94 and 722.84 is: 1,083.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,819.16 : 2,726.94 = 722.84 : x
  2. Step 2: Convert to fraction form
    1,819.16/2,726.94 = 722.84/x
  3. Step 3: Cross multiply
    1,819.16x = 2,726.94 × 722.84
  4. Step 4: Simplify right side
    1,819.16x = 1,971,141.31
  5. Step 5: Solve for x
    x = 1,971,141.31/1,819.16
  6. Step 6: Final answer
    x = 1,083.54

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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.