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Finding the Fourth Proportional to 6,611.74, 9,921.54 and 2,663.36

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Solution

The fourth proportional to 6,611.74, 9,921.54 and 2,663.36 is: 3,996.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,611.74 : 9,921.54 = 2,663.36 : x
  2. Step 2: Convert to fraction form
    6,611.74/9,921.54 = 2,663.36/x
  3. Step 3: Cross multiply
    6,611.74x = 9,921.54 × 2,663.36
  4. Step 4: Simplify right side
    6,611.74x = 26,424,632.77
  5. Step 5: Solve for x
    x = 26,424,632.77/6,611.74
  6. Step 6: Final answer
    x = 3,996.62

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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.