Home / 11,781.78-17,669.91-3,459.57

Finding the Fourth Proportional to 11,781.78, 17,669.91 and 3,459.57

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Solution

The fourth proportional to 11,781.78, 17,669.91 and 3,459.57 is: 5,188.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,781.78 : 17,669.91 = 3,459.57 : x
  2. Step 2: Convert to fraction form
    11,781.78/17,669.91 = 3,459.57/x
  3. Step 3: Cross multiply
    11,781.78x = 17,669.91 × 3,459.57
  4. Step 4: Simplify right side
    11,781.78x = 61,130,290.54
  5. Step 5: Solve for x
    x = 61,130,290.54/11,781.78
  6. Step 6: Final answer
    x = 5,188.54

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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.