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Finding the Fourth Proportional to 6,663.60, 9,991.74 and 2,713.85

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Solution

The fourth proportional to 6,663.60, 9,991.74 and 2,713.85 is: 4,069.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,663.60 : 9,991.74 = 2,713.85 : x
  2. Step 2: Convert to fraction form
    6,663.60/9,991.74 = 2,713.85/x
  3. Step 3: Cross multiply
    6,663.60x = 9,991.74 × 2,713.85
  4. Step 4: Simplify right side
    6,663.60x = 27,116,083.60
  5. Step 5: Solve for x
    x = 27,116,083.60/6,663.60
  6. Step 6: Final answer
    x = 4,069.28

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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.