Home / 3,556.78-5,334.86-1,218.11

Finding the Fourth Proportional to 3,556.78, 5,334.86 and 1,218.11

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Solution

The fourth proportional to 3,556.78, 5,334.86 and 1,218.11 is: 1,827.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,556.78 : 5,334.86 = 1,218.11 : x
  2. Step 2: Convert to fraction form
    3,556.78/5,334.86 = 1,218.11/x
  3. Step 3: Cross multiply
    3,556.78x = 5,334.86 × 1,218.11
  4. Step 4: Simplify right side
    3,556.78x = 6,498,422.69
  5. Step 5: Solve for x
    x = 6,498,422.69/3,556.78
  6. Step 6: Final answer
    x = 1,827.05

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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.