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Finding the Fourth Proportional to 3,556.66, 5,334.18 and 959.80

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Solution

The fourth proportional to 3,556.66, 5,334.18 and 959.80 is: 1,439.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,556.66 : 5,334.18 = 959.80 : x
  2. Step 2: Convert to fraction form
    3,556.66/5,334.18 = 959.80/x
  3. Step 3: Cross multiply
    3,556.66x = 5,334.18 × 959.80
  4. Step 4: Simplify right side
    3,556.66x = 5,119,745.96
  5. Step 5: Solve for x
    x = 5,119,745.96/3,556.66
  6. Step 6: Final answer
    x = 1,439.48

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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.