Home / 1,781.03-2,457.81-984.37

Finding the Fourth Proportional to 1,781.03, 2,457.81 and 984.37

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Solution

The fourth proportional to 1,781.03, 2,457.81 and 984.37 is: 1,358.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.03 : 2,457.81 = 984.37 : x
  2. Step 2: Convert to fraction form
    1,781.03/2,457.81 = 984.37/x
  3. Step 3: Cross multiply
    1,781.03x = 2,457.81 × 984.37
  4. Step 4: Simplify right side
    1,781.03x = 2,419,394.43
  5. Step 5: Solve for x
    x = 2,419,394.43/1,781.03
  6. Step 6: Final answer
    x = 1,358.42

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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.