Home / 4,161.20-5,745.20-2,669.78

Finding the Fourth Proportional to 4,161.20, 5,745.20 and 2,669.78

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Solution

The fourth proportional to 4,161.20, 5,745.20 and 2,669.78 is: 3,686.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,161.20 : 5,745.20 = 2,669.78 : x
  2. Step 2: Convert to fraction form
    4,161.20/5,745.20 = 2,669.78/x
  3. Step 3: Cross multiply
    4,161.20x = 5,745.20 × 2,669.78
  4. Step 4: Simplify right side
    4,161.20x = 15,338,421.07
  5. Step 5: Solve for x
    x = 15,338,421.07/4,161.20
  6. Step 6: Final answer
    x = 3,686.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.