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Finding the Fourth Proportional to 7,173.75, 9,900.29 and 4,029.94

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Solution

The fourth proportional to 7,173.75, 9,900.29 and 4,029.94 is: 5,561.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,173.75 : 9,900.29 = 4,029.94 : x
  2. Step 2: Convert to fraction form
    7,173.75/9,900.29 = 4,029.94/x
  3. Step 3: Cross multiply
    7,173.75x = 9,900.29 × 4,029.94
  4. Step 4: Simplify right side
    7,173.75x = 39,897,574.68
  5. Step 5: Solve for x
    x = 39,897,574.68/7,173.75
  6. Step 6: Final answer
    x = 5,561.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.