Home / 1,727.29-2,383.68-981.11

Finding the Fourth Proportional to 1,727.29, 2,383.68 and 981.11

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Solution

The fourth proportional to 1,727.29, 2,383.68 and 981.11 is: 1,353.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,727.29 : 2,383.68 = 981.11 : x
  2. Step 2: Convert to fraction form
    1,727.29/2,383.68 = 981.11/x
  3. Step 3: Cross multiply
    1,727.29x = 2,383.68 × 981.11
  4. Step 4: Simplify right side
    1,727.29x = 2,338,644.59
  5. Step 5: Solve for x
    x = 2,338,644.59/1,727.29
  6. Step 6: Final answer
    x = 1,353.94

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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.