Home / 1,721.15-2,581.85-488.66

Finding the Fourth Proportional to 1,721.15, 2,581.85 and 488.66

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Solution

The fourth proportional to 1,721.15, 2,581.85 and 488.66 is: 733.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.15 : 2,581.85 = 488.66 : x
  2. Step 2: Convert to fraction form
    1,721.15/2,581.85 = 488.66/x
  3. Step 3: Cross multiply
    1,721.15x = 2,581.85 × 488.66
  4. Step 4: Simplify right side
    1,721.15x = 1,261,641.02
  5. Step 5: Solve for x
    x = 1,261,641.02/1,721.15
  6. Step 6: Final answer
    x = 733.02

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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.