Home / 1,721.30-2,581.66-488.42

Finding the Fourth Proportional to 1,721.30, 2,581.66 and 488.42

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Solution

The fourth proportional to 1,721.30, 2,581.66 and 488.42 is: 732.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.30 : 2,581.66 = 488.42 : x
  2. Step 2: Convert to fraction form
    1,721.30/2,581.66 = 488.42/x
  3. Step 3: Cross multiply
    1,721.30x = 2,581.66 × 488.42
  4. Step 4: Simplify right side
    1,721.30x = 1,260,934.38
  5. Step 5: Solve for x
    x = 1,260,934.38/1,721.30
  6. Step 6: Final answer
    x = 732.55

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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.