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Finding the Fourth Proportional to 1,813.96, 2,502.92 and 1,721.68

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Solution

The fourth proportional to 1,813.96, 2,502.92 and 1,721.68 is: 2,375.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,813.96 : 2,502.92 = 1,721.68 : x
  2. Step 2: Convert to fraction form
    1,813.96/2,502.92 = 1,721.68/x
  3. Step 3: Cross multiply
    1,813.96x = 2,502.92 × 1,721.68
  4. Step 4: Simplify right side
    1,813.96x = 4,309,224.95
  5. Step 5: Solve for x
    x = 4,309,224.95/1,813.96
  6. Step 6: Final answer
    x = 2,375.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.