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Finding the Fourth Proportional to 8,689.93, 11,992.05 and 4,711.03

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Solution

The fourth proportional to 8,689.93, 11,992.05 and 4,711.03 is: 6,501.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,689.93 : 11,992.05 = 4,711.03 : x
  2. Step 2: Convert to fraction form
    8,689.93/11,992.05 = 4,711.03/x
  3. Step 3: Cross multiply
    8,689.93x = 11,992.05 × 4,711.03
  4. Step 4: Simplify right side
    8,689.93x = 56,494,907.31
  5. Step 5: Solve for x
    x = 56,494,907.31/8,689.93
  6. Step 6: Final answer
    x = 6,501.19

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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.