Home / 7,721.25-11,581.89-1,877.82

Finding the Fourth Proportional to 7,721.25, 11,581.89 and 1,877.82

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Solution

The fourth proportional to 7,721.25, 11,581.89 and 1,877.82 is: 2,816.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.25 : 11,581.89 = 1,877.82 : x
  2. Step 2: Convert to fraction form
    7,721.25/11,581.89 = 1,877.82/x
  3. Step 3: Cross multiply
    7,721.25x = 11,581.89 × 1,877.82
  4. Step 4: Simplify right side
    7,721.25x = 21,748,704.68
  5. Step 5: Solve for x
    x = 21,748,704.68/7,721.25
  6. Step 6: Final answer
    x = 2,816.73

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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.