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Finding the Fourth Proportional to 3,368.29, 5,043.12 and 1,721.29

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Solution

The fourth proportional to 3,368.29, 5,043.12 and 1,721.29 is: 2,577.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,368.29 : 5,043.12 = 1,721.29 : x
  2. Step 2: Convert to fraction form
    3,368.29/5,043.12 = 1,721.29/x
  3. Step 3: Cross multiply
    3,368.29x = 5,043.12 × 1,721.29
  4. Step 4: Simplify right side
    3,368.29x = 8,680,672.02
  5. Step 5: Solve for x
    x = 8,680,672.02/3,368.29
  6. Step 6: Final answer
    x = 2,577.17

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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.