Home / 7,821.21-11,725.95-2,889.93

Finding the Fourth Proportional to 7,821.21, 11,725.95 and 2,889.93

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Solution

The fourth proportional to 7,821.21, 11,725.95 and 2,889.93 is: 4,332.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.21 : 11,725.95 = 2,889.93 : x
  2. Step 2: Convert to fraction form
    7,821.21/11,725.95 = 2,889.93/x
  3. Step 3: Cross multiply
    7,821.21x = 11,725.95 × 2,889.93
  4. Step 4: Simplify right side
    7,821.21x = 33,887,174.68
  5. Step 5: Solve for x
    x = 33,887,174.68/7,821.21
  6. Step 6: Final answer
    x = 4,332.73

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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.