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Finding the Fourth Proportional to 6,991.62, 10,490.16 and 2,608.05

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Solution

The fourth proportional to 6,991.62, 10,490.16 and 2,608.05 is: 3,913.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,991.62 : 10,490.16 = 2,608.05 : x
  2. Step 2: Convert to fraction form
    6,991.62/10,490.16 = 2,608.05/x
  3. Step 3: Cross multiply
    6,991.62x = 10,490.16 × 2,608.05
  4. Step 4: Simplify right side
    6,991.62x = 27,358,837.23
  5. Step 5: Solve for x
    x = 27,358,837.23/6,991.62
  6. Step 6: Final answer
    x = 3,913.09

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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.