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Finding the Fourth Proportional to 4,318.52, 6,480.41 and 1,721.25

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Solution

The fourth proportional to 4,318.52, 6,480.41 and 1,721.25 is: 2,582.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,318.52 : 6,480.41 = 1,721.25 : x
  2. Step 2: Convert to fraction form
    4,318.52/6,480.41 = 1,721.25/x
  3. Step 3: Cross multiply
    4,318.52x = 6,480.41 × 1,721.25
  4. Step 4: Simplify right side
    4,318.52x = 11,154,397.11
  5. Step 5: Solve for x
    x = 11,154,397.11/4,318.52
  6. Step 6: Final answer
    x = 2,582.92

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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.