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Finding the Fourth Proportional to 8,721, 13,083.32 and 3,526.88

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Solution

The fourth proportional to 8,721, 13,083.32 and 3,526.88 is: 5,291.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721 : 13,083.32 = 3,526.88 : x
  2. Step 2: Convert to fraction form
    8,721/13,083.32 = 3,526.88/x
  3. Step 3: Cross multiply
    8,721x = 13,083.32 × 3,526.88
  4. Step 4: Simplify right side
    8,721x = 46,143,243.04
  5. Step 5: Solve for x
    x = 46,143,243.04/8,721
  6. Step 6: Final answer
    x = 5,291.05

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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.