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Finding the Fourth Proportional to 8,620.68, 11,898.42 and 5,476.26

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Solution

The fourth proportional to 8,620.68, 11,898.42 and 5,476.26 is: 7,558.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620.68 : 11,898.42 = 5,476.26 : x
  2. Step 2: Convert to fraction form
    8,620.68/11,898.42 = 5,476.26/x
  3. Step 3: Cross multiply
    8,620.68x = 11,898.42 × 5,476.26
  4. Step 4: Simplify right side
    8,620.68x = 65,158,841.51
  5. Step 5: Solve for x
    x = 65,158,841.51/8,620.68
  6. Step 6: Final answer
    x = 7,558.43

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