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Finding the Fourth Proportional to 6,991.11, 10,491.22 and 6,530.02

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Solution

The fourth proportional to 6,991.11, 10,491.22 and 6,530.02 is: 9,799.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,991.11 : 10,491.22 = 6,530.02 : x
  2. Step 2: Convert to fraction form
    6,991.11/10,491.22 = 6,530.02/x
  3. Step 3: Cross multiply
    6,991.11x = 10,491.22 × 6,530.02
  4. Step 4: Simplify right side
    6,991.11x = 68,507,858.36
  5. Step 5: Solve for x
    x = 68,507,858.36/6,991.11
  6. Step 6: Final answer
    x = 9,799.28

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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.