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Finding the Fourth Proportional to 4,684.38, 7,021.98 and 1,721.94

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Solution

The fourth proportional to 4,684.38, 7,021.98 and 1,721.94 is: 2,581.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,684.38 : 7,021.98 = 1,721.94 : x
  2. Step 2: Convert to fraction form
    4,684.38/7,021.98 = 1,721.94/x
  3. Step 3: Cross multiply
    4,684.38x = 7,021.98 × 1,721.94
  4. Step 4: Simplify right side
    4,684.38x = 12,091,428.24
  5. Step 5: Solve for x
    x = 12,091,428.24/4,684.38
  6. Step 6: Final answer
    x = 2,581.22

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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.