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Finding the Fourth Proportional to 3,556.58, 5,334.93 and 959.45

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Solution

The fourth proportional to 3,556.58, 5,334.93 and 959.45 is: 1,439.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,556.58 : 5,334.93 = 959.45 : x
  2. Step 2: Convert to fraction form
    3,556.58/5,334.93 = 959.45/x
  3. Step 3: Cross multiply
    3,556.58x = 5,334.93 × 959.45
  4. Step 4: Simplify right side
    3,556.58x = 5,118,571.91
  5. Step 5: Solve for x
    x = 5,118,571.91/3,556.58
  6. Step 6: Final answer
    x = 1,439.19

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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.