Home / 3,109.10-4,664.86-1,161.46

Finding the Fourth Proportional to 3,109.10, 4,664.86 and 1,161.46

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Solution

The fourth proportional to 3,109.10, 4,664.86 and 1,161.46 is: 1,742.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.10 : 4,664.86 = 1,161.46 : x
  2. Step 2: Convert to fraction form
    3,109.10/4,664.86 = 1,161.46/x
  3. Step 3: Cross multiply
    3,109.10x = 4,664.86 × 1,161.46
  4. Step 4: Simplify right side
    3,109.10x = 5,418,024.97
  5. Step 5: Solve for x
    x = 5,418,024.97/3,109.10
  6. Step 6: Final answer
    x = 1,742.63

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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.