Home / 3,161.25-4,741.68-969.81

Finding the Fourth Proportional to 3,161.25, 4,741.68 and 969.81

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Solution

The fourth proportional to 3,161.25, 4,741.68 and 969.81 is: 1,454.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.25 : 4,741.68 = 969.81 : x
  2. Step 2: Convert to fraction form
    3,161.25/4,741.68 = 969.81/x
  3. Step 3: Cross multiply
    3,161.25x = 4,741.68 × 969.81
  4. Step 4: Simplify right side
    3,161.25x = 4,598,528.68
  5. Step 5: Solve for x
    x = 4,598,528.68/3,161.25
  6. Step 6: Final answer
    x = 1,454.66

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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.