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Finding the Fourth Proportional to 8,579.81, 11,804.40 and 7,567.11

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Solution

The fourth proportional to 8,579.81, 11,804.40 and 7,567.11 is: 10,411.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.81 : 11,804.40 = 7,567.11 : x
  2. Step 2: Convert to fraction form
    8,579.81/11,804.40 = 7,567.11/x
  3. Step 3: Cross multiply
    8,579.81x = 11,804.40 × 7,567.11
  4. Step 4: Simplify right side
    8,579.81x = 89,325,181.37
  5. Step 5: Solve for x
    x = 89,325,181.37/8,579.81
  6. Step 6: Final answer
    x = 10,411.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.