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Finding the Fourth Proportional to 11,710.20, 17,564.22 and 3,919.08

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Solution

The fourth proportional to 11,710.20, 17,564.22 and 3,919.08 is: 5,878.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,710.20 : 17,564.22 = 3,919.08 : x
  2. Step 2: Convert to fraction form
    11,710.20/17,564.22 = 3,919.08/x
  3. Step 3: Cross multiply
    11,710.20x = 17,564.22 × 3,919.08
  4. Step 4: Simplify right side
    11,710.20x = 68,835,583.32
  5. Step 5: Solve for x
    x = 68,835,583.32/11,710.20
  6. Step 6: Final answer
    x = 5,878.26

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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.