Home / 4,721.25-7,081.94-1,643.25

Finding the Fourth Proportional to 4,721.25, 7,081.94 and 1,643.25

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Solution

The fourth proportional to 4,721.25, 7,081.94 and 1,643.25 is: 2,464.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,721.25 : 7,081.94 = 1,643.25 : x
  2. Step 2: Convert to fraction form
    4,721.25/7,081.94 = 1,643.25/x
  3. Step 3: Cross multiply
    4,721.25x = 7,081.94 × 1,643.25
  4. Step 4: Simplify right side
    4,721.25x = 11,637,389.69
  5. Step 5: Solve for x
    x = 11,637,389.69/4,721.25
  6. Step 6: Final answer
    x = 2,464.90

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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.