Home / 1,781.05-2,457.88-984.37

Finding the Fourth Proportional to 1,781.05, 2,457.88 and 984.37

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Solution

The fourth proportional to 1,781.05, 2,457.88 and 984.37 is: 1,358.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.05 : 2,457.88 = 984.37 : x
  2. Step 2: Convert to fraction form
    1,781.05/2,457.88 = 984.37/x
  3. Step 3: Cross multiply
    1,781.05x = 2,457.88 × 984.37
  4. Step 4: Simplify right side
    1,781.05x = 2,419,463.34
  5. Step 5: Solve for x
    x = 2,419,463.34/1,781.05
  6. Step 6: Final answer
    x = 1,358.45

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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.