Home / 7,721.49-11,582.14-2,174.55

Finding the Fourth Proportional to 7,721.49, 11,582.14 and 2,174.55

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Solution

The fourth proportional to 7,721.49, 11,582.14 and 2,174.55 is: 3,261.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.49 : 11,582.14 = 2,174.55 : x
  2. Step 2: Convert to fraction form
    7,721.49/11,582.14 = 2,174.55/x
  3. Step 3: Cross multiply
    7,721.49x = 11,582.14 × 2,174.55
  4. Step 4: Simplify right side
    7,721.49x = 25,185,942.54
  5. Step 5: Solve for x
    x = 25,185,942.54/7,721.49
  6. Step 6: Final answer
    x = 3,261.80

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1.5x scale

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.