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Finding the Fourth Proportional to 3,001.63, 4,501.93 and 809.85

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Solution

The fourth proportional to 3,001.63, 4,501.93 and 809.85 is: 1,214.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,001.63 : 4,501.93 = 809.85 : x
  2. Step 2: Convert to fraction form
    3,001.63/4,501.93 = 809.85/x
  3. Step 3: Cross multiply
    3,001.63x = 4,501.93 × 809.85
  4. Step 4: Simplify right side
    3,001.63x = 3,645,879.06
  5. Step 5: Solve for x
    x = 3,645,879.06/3,001.63
  6. Step 6: Final answer
    x = 1,214.63

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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.