Home / 7,721.73-11,581.68-2,175.51

Finding the Fourth Proportional to 7,721.73, 11,581.68 and 2,175.51

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Solution

The fourth proportional to 7,721.73, 11,581.68 and 2,175.51 is: 3,263.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.73 : 11,581.68 = 2,175.51 : x
  2. Step 2: Convert to fraction form
    7,721.73/11,581.68 = 2,175.51/x
  3. Step 3: Cross multiply
    7,721.73x = 11,581.68 × 2,175.51
  4. Step 4: Simplify right side
    7,721.73x = 25,196,060.66
  5. Step 5: Solve for x
    x = 25,196,060.66/7,721.73
  6. Step 6: Final answer
    x = 3,263.01

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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.