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Finding the Fourth Proportional to 3,556.63, 5,335.53 and 1,335.64

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Solution

The fourth proportional to 3,556.63, 5,335.53 and 1,335.64 is: 2,003.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,556.63 : 5,335.53 = 1,335.64 : x
  2. Step 2: Convert to fraction form
    3,556.63/5,335.53 = 1,335.64/x
  3. Step 3: Cross multiply
    3,556.63x = 5,335.53 × 1,335.64
  4. Step 4: Simplify right side
    3,556.63x = 7,126,339.88
  5. Step 5: Solve for x
    x = 7,126,339.88/3,556.63
  6. Step 6: Final answer
    x = 2,003.68

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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.