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Finding the Fourth Proportional to 3,909.23, 5,862.81 and 1,828.17

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Solution

The fourth proportional to 3,909.23, 5,862.81 and 1,828.17 is: 2,741.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,909.23 : 5,862.81 = 1,828.17 : x
  2. Step 2: Convert to fraction form
    3,909.23/5,862.81 = 1,828.17/x
  3. Step 3: Cross multiply
    3,909.23x = 5,862.81 × 1,828.17
  4. Step 4: Simplify right side
    3,909.23x = 10,718,220.21
  5. Step 5: Solve for x
    x = 10,718,220.21/3,909.23
  6. Step 6: Final answer
    x = 2,741.77

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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.