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Finding the Fourth Proportional to 1,802.75, 2,699.27 and 1,021.61

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Solution

The fourth proportional to 1,802.75, 2,699.27 and 1,021.61 is: 1,529.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,802.75 : 2,699.27 = 1,021.61 : x
  2. Step 2: Convert to fraction form
    1,802.75/2,699.27 = 1,021.61/x
  3. Step 3: Cross multiply
    1,802.75x = 2,699.27 × 1,021.61
  4. Step 4: Simplify right side
    1,802.75x = 2,757,582.62
  5. Step 5: Solve for x
    x = 2,757,582.62/1,802.75
  6. Step 6: Final answer
    x = 1,529.65

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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.