Home / 3,109.68-4,664.70-1,161.72

Finding the Fourth Proportional to 3,109.68, 4,664.70 and 1,161.72

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Solution

The fourth proportional to 3,109.68, 4,664.70 and 1,161.72 is: 1,742.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.68 : 4,664.70 = 1,161.72 : x
  2. Step 2: Convert to fraction form
    3,109.68/4,664.70 = 1,161.72/x
  3. Step 3: Cross multiply
    3,109.68x = 4,664.70 × 1,161.72
  4. Step 4: Simplify right side
    3,109.68x = 5,419,075.28
  5. Step 5: Solve for x
    x = 5,419,075.28/3,109.68
  6. Step 6: Final answer
    x = 1,742.65

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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.