Home / 1,721.13-2,581.08-488.18

Finding the Fourth Proportional to 1,721.13, 2,581.08 and 488.18

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Solution

The fourth proportional to 1,721.13, 2,581.08 and 488.18 is: 732.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.13 : 2,581.08 = 488.18 : x
  2. Step 2: Convert to fraction form
    1,721.13/2,581.08 = 488.18/x
  3. Step 3: Cross multiply
    1,721.13x = 2,581.08 × 488.18
  4. Step 4: Simplify right side
    1,721.13x = 1,260,018.73
  5. Step 5: Solve for x
    x = 1,260,018.73/1,721.13
  6. Step 6: Final answer
    x = 732.09

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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.