Home / 2,109.05-3,159.34-1,936.81

Finding the Fourth Proportional to 2,109.05, 3,159.34 and 1,936.81

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Solution

The fourth proportional to 2,109.05, 3,159.34 and 1,936.81 is: 2,901.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,109.05 : 3,159.34 = 1,936.81 : x
  2. Step 2: Convert to fraction form
    2,109.05/3,159.34 = 1,936.81/x
  3. Step 3: Cross multiply
    2,109.05x = 3,159.34 × 1,936.81
  4. Step 4: Simplify right side
    2,109.05x = 6,119,028.57
  5. Step 5: Solve for x
    x = 6,119,028.57/2,109.05
  6. Step 6: Final answer
    x = 2,901.33

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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.