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Finding the Fourth Proportional to 3,556.59, 5,335.10 and 1,091.43

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Solution

The fourth proportional to 3,556.59, 5,335.10 and 1,091.43 is: 1,637.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,556.59 : 5,335.10 = 1,091.43 : x
  2. Step 2: Convert to fraction form
    3,556.59/5,335.10 = 1,091.43/x
  3. Step 3: Cross multiply
    3,556.59x = 5,335.10 × 1,091.43
  4. Step 4: Simplify right side
    3,556.59x = 5,822,888.19
  5. Step 5: Solve for x
    x = 5,822,888.19/3,556.59
  6. Step 6: Final answer
    x = 1,637.21

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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.