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Finding the Fourth Proportional to 8,699.98, 13,049.90 and 2,126.11

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Solution

The fourth proportional to 8,699.98, 13,049.90 and 2,126.11 is: 3,189.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.98 : 13,049.90 = 2,126.11 : x
  2. Step 2: Convert to fraction form
    8,699.98/13,049.90 = 2,126.11/x
  3. Step 3: Cross multiply
    8,699.98x = 13,049.90 × 2,126.11
  4. Step 4: Simplify right side
    8,699.98x = 27,745,457.64
  5. Step 5: Solve for x
    x = 27,745,457.64/8,699.98
  6. Step 6: Final answer
    x = 3,189.14

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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.