Home / 1,821.45-2,732.19-725.52

Finding the Fourth Proportional to 1,821.45, 2,732.19 and 725.52

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Solution

The fourth proportional to 1,821.45, 2,732.19 and 725.52 is: 1,088.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.45 : 2,732.19 = 725.52 : x
  2. Step 2: Convert to fraction form
    1,821.45/2,732.19 = 725.52/x
  3. Step 3: Cross multiply
    1,821.45x = 2,732.19 × 725.52
  4. Step 4: Simplify right side
    1,821.45x = 1,982,258.49
  5. Step 5: Solve for x
    x = 1,982,258.49/1,821.45
  6. Step 6: Final answer
    x = 1,088.29

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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.